# ##### BEGIN GPL LICENSE BLOCK #####
#
#  This program is free software; you can redistribute it and/or
#  modify it under the terms of the GNU General Public License
#  as published by the Free Software Foundation; either version 2
#  of the License, or (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software Foundation,
#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####

from blenderkit import paths, utils, categories, ui, colors, bkit_oauth, version_checker, tasks_queue, rerequests, \
    resolutions, image_utils

import blenderkit
from bpy.app.handlers import persistent

from bpy.props import (  # TODO only keep the ones actually used when cleaning
    IntProperty,
    FloatProperty,
    FloatVectorProperty,
    StringProperty,
    EnumProperty,
    BoolProperty,
    PointerProperty,
)
from bpy.types import (
    Operator,
    Panel,
    AddonPreferences,
    PropertyGroup,
    UIList
)

import requests, os, random
import time
import threading
import platform
import bpy
import copy
import json
import math

import logging

bk_logger = logging.getLogger('blenderkit')

search_start_time = 0
prev_time = 0


def check_errors(rdata):
    if rdata.get('statusCode') and int(rdata.get('statusCode')) > 299:
        utils.p(rdata)
        if rdata.get('detail') == 'Invalid token.':
            user_preferences = bpy.context.preferences.addons['blenderkit'].preferences
            if user_preferences.api_key != '':
                if user_preferences.enable_oauth:
                    bkit_oauth.refresh_token_thread()
                return False, rdata.get('detail')
            return False, 'Use login panel to connect your profile.'
        else:
            return False, rdata.get('detail')
    return True, ''


search_threads = []
thumb_sml_download_threads = {}
thumb_full_download_threads = {}
reports = ''

rtips = ['Click or drag model or material in scene to link/append ',
         "Please rate responsively and plentifully. This helps us distribute rewards to the authors.",
         "Click on brushes to link them into scene.",
         "All materials and brushes are free.",
         "Storage for public assets is unlimited.",
         "Locked models are available if you subscribe to Full plan.",
         "Login to upload your own models, materials or brushes.",
         "Use 'A' key over asset bar to search assets by same author.",
         "Use 'W' key over asset bar to open Authors webpage.", ]


def refresh_token_timer():
    ''' this timer gets run every time the token needs refresh. It refreshes tokens and also categories.'''
    utils.p('refresh timer')
    user_preferences = bpy.context.preferences.addons['blenderkit'].preferences
    fetch_server_data()
    categories.load_categories()

    return max(3600, user_preferences.api_key_life - 3600)


def update_ad(ad):
    if not ad.get('assetBaseId'):
        try:
            ad['assetBaseId'] = ad['asset_base_id']  # this should stay ONLY for compatibility with older scenes
            ad['assetType'] = ad['asset_type']  # this should stay ONLY for compatibility with older scenes
            ad['verificationStatus'] = ad[
                'verification_status']  # this should stay ONLY for compatibility with older scenes
            ad['author'] = {}
            ad['author']['id'] = ad['author_id']  # this should stay ONLY for compatibility with older scenes
            ad['canDownload'] = ad['can_download']  # this should stay ONLY for compatibility with older scenes
        except Exception as e:
            bk_logger.error('BLenderKit failed to update older asset data')
    return ad


def update_assets_data():  # updates assets data on scene load.
    '''updates some properties that were changed on scenes with older assets.
    The properties were mainly changed from snake_case to CamelCase to fit the data that is coming from the server.
    '''
    data = bpy.data

    datablocks = [
        bpy.data.objects,
        bpy.data.materials,
        bpy.data.brushes,
    ]
    for dtype in datablocks:
        for block in dtype:
            if block.get('asset_data') != None:
                update_ad(block['asset_data'])

    dicts = [
        'assets used',
        # 'assets rated',# assets rated stores only true/false, not asset data.
    ]
    for s in bpy.data.scenes:
        for bkdict in dicts:

            d = s.get(bkdict)
            if not d:
                continue;

            for asset_id in d.keys():
                update_ad(d[asset_id])
                # bpy.context.scene['assets used'][ad] = ad


def purge_search_results():
    ''' clean up search results on save/load.'''

    s = bpy.context.scene

    sr_props = [
        'search results',
        'search results orig',
    ]
    asset_types = ['model', 'material', 'scene', 'hdr', 'brush']
    for at in asset_types:
        sr_props.append('bkit {at} search')
        sr_props.append('bkit {at} search orig')
    for sr_prop in sr_props:
        if s.get(sr_prop):
            del (s[sr_prop])


@persistent
def scene_load(context):
    '''
    Loads categories , checks timers registration, and updates scene asset data.
    Should (probably)also update asset data from server (after user consent)
    '''
    wm = bpy.context.window_manager
    purge_search_results()
    fetch_server_data()
    categories.load_categories()
    if not bpy.app.timers.is_registered(refresh_token_timer):
        bpy.app.timers.register(refresh_token_timer, persistent=True, first_interval=36000)
    update_assets_data()


def fetch_server_data():
    ''' download categories , profile, and refresh token if needed.'''
    if not bpy.app.background:
        user_preferences = bpy.context.preferences.addons['blenderkit'].preferences
        api_key = user_preferences.api_key
        # Only refresh new type of tokens(by length), and only one hour before the token timeouts.
        if user_preferences.enable_oauth and \
                len(user_preferences.api_key) < 38 and len(user_preferences.api_key) > 0 and \
                user_preferences.api_key_timeout < time.time() + 3600:
            bkit_oauth.refresh_token_thread()
        if api_key != '' and bpy.context.window_manager.get('bkit profile') == None:
            get_profile()
        if bpy.context.window_manager.get('bkit_categories') is None:
            categories.fetch_categories_thread(api_key, force = False)


first_time = True
last_clipboard = ''


def check_clipboard():
    '''
    Checks clipboard for an exact string containing asset ID.
    The string is generated on www.blenderkit.com as for example here:
    https://www.blenderkit.com/get-blenderkit/54ff5c85-2c73-49e9-ba80-aec18616a408/
    '''

    # clipboard monitoring to search assets from web
    if platform.system() != 'Linux':
        global last_clipboard
        if bpy.context.window_manager.clipboard != last_clipboard:
            last_clipboard = bpy.context.window_manager.clipboard
            instr = 'asset_base_id:'
            # first check if contains asset id, then asset type
            if last_clipboard[:len(instr)] == instr:
                atstr = 'asset_type:'
                ati = last_clipboard.find(atstr)
                # this only checks if the asset_type keyword is there but let's the keywords update function do the parsing.
                if ati > -1:
                    search_props = utils.get_search_props()
                    search_props.search_keywords = last_clipboard
                    # don't run search after this - assigning to keywords runs the search_update function.


def parse_result(r):
    '''
    needed to generate some extra data in the result(by now)
    Parameters
    ----------
    r - search result, also called asset_data
    '''
    scene = bpy.context.scene

    # TODO remove this fix when filesSize is fixed.
    # this is a temporary fix for too big numbers from the server.
    # try:
    #     r['filesSize'] = int(r['filesSize'] / 1024)
    # except:
    #     utils.p('asset with no files-size')
    asset_type = r['assetType']
    if len(r['files']) > 0:#TODO remove this condition so all assets are parsed.
        r['available_resolutions'] = []
        allthumbs = []
        durl, tname, small_tname = '', '', ''
        for f in r['files']:
            if f['fileType'] == 'thumbnail':
                tname = paths.extract_filename_from_url(f['fileThumbnailLarge'])
                small_tname = paths.extract_filename_from_url(f['fileThumbnail'])
                allthumbs.append(tname)  # TODO just first thumb is used now.

            tdict = {}
            for i, t in enumerate(allthumbs):
                tdict['thumbnail_%i'] = t
            if f['fileType'] == 'blend':
                durl = f['downloadUrl'].split('?')[0]
                # fname = paths.extract_filename_from_url(f['filePath'])

            if f['fileType'].find('resolution') > -1:
                r['available_resolutions'].append(resolutions.resolutions[f['fileType']])
        r['max_resolution'] = 0
        if r['available_resolutions']:  # should check only for non-empty sequences
            r['max_resolution'] = max(r['available_resolutions'])

        tooltip = generate_tooltip(r)
        # for some reason, the id was still int on some occurances. investigate this.
        r['author']['id'] = str(r['author']['id'])

        # some helper props, but generally shouldn't be renaming/duplifiying original properties,
        # so blender's data is same as on server.
        asset_data = {'thumbnail': tname,
                      'thumbnail_small': small_tname,
                      # 'thumbnails':allthumbs,
                      # 'download_url': durl, #made obsolete since files are stored in orig form.
                      # 'id': r['id'],
                      # 'asset_base_id': r['assetBaseId'],#this should stay ONLY for compatibility with older scenes
                      # 'name': r['name'],
                      # 'asset_type': r['assetType'], #this should stay ONLY for compatibility with older scenes
                      'tooltip': tooltip,
                      # 'tags': r['tags'],
                      # 'can_download': r.get('canDownload', True),#this should stay ONLY for compatibility with older scenes
                      # 'verification_status': r['verificationStatus'],#this should stay ONLY for compatibility with older scenes
                      # 'author_id': r['author']['id'],#this should stay ONLY for compatibility with older scenes
                      # 'author': r['author']['firstName'] + ' ' + r['author']['lastName']
                      # 'description': r['description'],
                      }
        asset_data['downloaded'] = 0

        # parse extra params needed for blender here
        params = utils.params_to_dict(r['parameters'])

        if asset_type == 'model':
            if params.get('boundBoxMinX') != None:
                bbox = {
                    'bbox_min': (
                        float(params['boundBoxMinX']),
                        float(params['boundBoxMinY']),
                        float(params['boundBoxMinZ'])),
                    'bbox_max': (
                        float(params['boundBoxMaxX']),
                        float(params['boundBoxMaxY']),
                        float(params['boundBoxMaxZ']))
                }

            else:
                bbox = {
                    'bbox_min': (-.5, -.5, 0),
                    'bbox_max': (.5, .5, 1)
                }
            asset_data.update(bbox)
        if asset_type == 'material':
            asset_data['texture_size_meters'] = params.get('textureSizeMeters', 1.0)

        asset_data.update(tdict)

        au = scene.get('assets used', {})
        if au == {}:
            scene['assets used'] = au
        if r['assetBaseId'] in au.keys():
            asset_data['downloaded'] = 100
            # transcribe all urls already fetched from the server
            r_previous = au[r['assetBaseId']]
            if r_previous.get('files'):
                for f in r_previous['files']:
                    if f.get('url'):
                        for f1 in r['files']:
                            if f1['fileType'] == f['fileType']:
                                f1['url'] = f['url']

        # attempt to switch to use original data gradually, since the parsing as itself should become obsolete.
        asset_data.update(r)
        return asset_data


# @bpy.app.handlers.persistent
def timer_update():
    # this makes a first search after opening blender. showing latest assets.
    # utils.p('timer search')

    global first_time
    preferences = bpy.context.preferences.addons['blenderkit'].preferences
    if first_time and not bpy.app.background:  # first time

        first_time = False
        if preferences.show_on_start:
            # TODO here it should check if there are some results, and only open assetbar if this is the case, not search.
            # if bpy.context.window_manager.get('search results') is None:
            search()
            # preferences.first_run = False
        if preferences.tips_on_start:
            utils.get_largest_area()
            ui.update_ui_size(ui.active_area_pointer, ui.active_region_pointer)
            ui.add_report(text='BlenderKit Tip: ' + random.choice(rtips), timeout=12, color=colors.GREEN)
        return 3.0

    # if preferences.first_run:
    #     search()
    #     preferences.first_run = False

    # check_clipboard()

    global search_threads
    if len(search_threads) == 0:
        return 1.0
    # don't do anything while dragging - this could switch asset during drag, and make results list length different,
    # causing a lot of throuble.
    if bpy.context.scene.blenderkitUI.dragging:
        return 0.5
    for thread in search_threads:
        # TODO this doesn't check all processes when one gets removed,
        # but most of the time only one is running anyway
        if not thread[0].is_alive():
            search_threads.remove(thread)  #
            icons_dir = thread[1]
            scene = bpy.context.scene
            # these 2 lines should update the previews enum and set the first result as active.
            wm = bpy.context.window_manager
            asset_type = thread[2]
            if asset_type == 'model':
                props = scene.blenderkit_models
                # json_filepath = os.path.join(icons_dir, 'model_searchresult.json')
            if asset_type == 'scene':
                props = scene.blenderkit_scene
                # json_filepath = os.path.join(icons_dir, 'scene_searchresult.json')
            if asset_type == 'hdr':
                props = scene.blenderkit_HDR
                # json_filepath = os.path.join(icons_dir, 'scene_searchresult.json')
            if asset_type == 'material':
                props = scene.blenderkit_mat
                # json_filepath = os.path.join(icons_dir, 'material_searchresult.json')
            if asset_type == 'brush':
                props = scene.blenderkit_brush
                # json_filepath = os.path.join(icons_dir, 'brush_searchresult.json')
            search_name = f'bkit {asset_type} search'

            wm[search_name] = []

            global reports
            if reports != '':
                props.report = str(reports)
                return .2

            rdata = thread[0].result

            result_field = []
            ok, error = check_errors(rdata)
            if ok:
                bpy.ops.object.run_assetbar_fix_context()
                for r in rdata['results']:
                    asset_data = parse_result(r)
                    if asset_data != None:
                        result_field.append(asset_data)

                        # results = rdata['results']
                wm[search_name] = result_field
                wm['search results'] = result_field
                wm[search_name + ' orig'] = copy.deepcopy(rdata)
                wm['search results orig'] = wm[search_name + ' orig']

                load_previews()
                ui_props = bpy.context.scene.blenderkitUI
                if len(result_field) < ui_props.scrolloffset:
                    ui_props.scrolloffset = 0
                props.is_searching = False
                props.search_error = False
                props.report = 'Found %i results. ' % (wm['search results orig']['count'])
                if len(wm['search results']) == 0:
                    tasks_queue.add_task((ui.add_report, ('No matching results found.',)))
                # undo push
                bpy.ops.wm.undo_push_context(message='Get BlenderKit search')

            else:
                bk_logger.error(error)
                props.report = error
                props.search_error = True

            # print('finished search thread')
            mt('preview loading finished')

    return .3


def load_previews():
    scene = bpy.context.scene
    # FIRST START SEARCH
    props = scene.blenderkitUI
    directory = paths.get_temp_dir('%s_search' % props.asset_type.lower())
    s = bpy.context.scene
    results = bpy.context.window_manager.get('search results')
    #
    if results is not None:
        inames = []
        tpaths = []

        i = 0
        for r in results:
            tpath = os.path.join(directory, r['thumbnail_small'])
            if not r['thumbnail_small']:
                tpath = paths.get_addon_thumbnail_path('thumbnail_not_available.jpg')

            if not os.path.exists(tpath):
                continue
            iname = utils.previmg_name(i)

            # if os.path.exists(tpath):  # sometimes we are unlucky...
            img = bpy.data.images.get(iname)

            if img is None:
                img = bpy.data.images.load(tpath)
                img.name = iname
            elif img.filepath != tpath:
                # had to add this check for autopacking files...
                if img.packed_file is not None:
                    img.unpack(method='USE_ORIGINAL')
                img.filepath = tpath
                img.reload()
            if r['assetType'] == 'hdr':
                # to display hdr thumbnails correctly, we use non-color, otherwise looks shifted
                image_utils.set_colorspace(img, 'Non-Color')
            else:
                image_utils.set_colorspace(img, 'sRGB')

            i += 1
    # print('previews loaded')


#  line splitting for longer texts...
def split_subs(text, threshold=40):
    if text == '':
        return []
    # temporarily disable this, to be able to do this in drawing code

    text = text.rstrip()
    text = text.replace('\r\n', '\n')

    lines = []

    while len(text) > threshold:
        # first handle if there's an \n line ending
        i_rn = text.find('\n')
        if 1 < i_rn < threshold:
            i = i_rn
            text = text.replace('\n', '', 1)
        else:
            i = text.rfind(' ', 0, threshold)
            i1 = text.rfind(',', 0, threshold)
            i2 = text.rfind('.', 0, threshold)
            i = max(i, i1, i2)
            if i <= 0:
                i = threshold
        lines.append(text[:i])
        text = text[i:]
    lines.append(text)
    return lines


def list_to_str(input):
    output = ''
    for i, text in enumerate(input):
        output += text
        if i < len(input) - 1:
            output += ', '
    return output


def writeblock(t, input, width=40):  # for longer texts
    dlines = split_subs(input, threshold=width)
    for i, l in enumerate(dlines):
        t += '%s\n' % l
    return t


def writeblockm(tooltip, mdata, key='', pretext=None, width=40):  # for longer texts
    if mdata.get(key) == None:
        return tooltip
    else:
        intext = mdata[key]
        if type(intext) == list:
            intext = list_to_str(intext)
        if type(intext) == float:
            intext = round(intext, 3)
        intext = str(intext)
        if intext.rstrip() == '':
            return tooltip
        if pretext == None:
            pretext = key
        if pretext != '':
            pretext = pretext + ': '
        text = pretext + intext
        dlines = split_subs(text, threshold=width)
        for i, l in enumerate(dlines):
            tooltip += '%s\n' % l

    return tooltip


def fmt_length(prop):
    prop = str(round(prop, 2)) + 'm'
    return prop


def has(mdata, prop):
    if mdata.get(prop) is not None and mdata[prop] is not None and mdata[prop] is not False:
        return True
    else:
        return False


def generate_tooltip(mdata):
    col_w = 40
    if type(mdata['parameters']) == list:
        mparams = utils.params_to_dict(mdata['parameters'])
    else:
        mparams = mdata['parameters']
    t = ''
    t = writeblock(t, mdata['displayName'], width=col_w)
    t += '\n'

    t = writeblockm(t, mdata, key='description', pretext='', width=col_w)
    if mdata['description'] != '':
        t += '\n'

    bools = (('rig', None), ('animated', None), ('manifold', 'non-manifold'), ('scene', None), ('simulation', None),
             ('uv', None))
    for b in bools:
        if mparams.get(b[0]):
            mdata['tags'].append(b[0])
        elif b[1] != None:
            mdata['tags'].append(b[1])

    bools_data = ('adult',)
    for b in bools_data:
        if mdata.get(b) and mdata[b]:
            mdata['tags'].append(b)
    t = writeblockm(t, mparams, key='designer', pretext='designer', width=col_w)
    t = writeblockm(t, mparams, key='manufacturer', pretext='manufacturer', width=col_w)
    t = writeblockm(t, mparams, key='designCollection', pretext='design collection', width=col_w)

    # t = writeblockm(t, mparams, key='engines', pretext='engine', width = col_w)
    # t = writeblockm(t, mparams, key='model_style', pretext='style', width = col_w)
    # t = writeblockm(t, mparams, key='material_style', pretext='style', width = col_w)
    # t = writeblockm(t, mdata, key='tags', width = col_w)
    # t = writeblockm(t, mparams, key='condition', pretext='condition', width = col_w)
    # t = writeblockm(t, mparams, key='productionLevel', pretext='production level', width = col_w)
    if has(mdata, 'purePbr'):
        t = writeblockm(t, mparams, key='pbrType', pretext='pbr', width=col_w)

    t = writeblockm(t, mparams, key='designYear', pretext='design year', width=col_w)

    if has(mparams, 'dimensionX'):
        t += 'size: %s, %s, %s\n' % (fmt_length(mparams['dimensionX']),
                                     fmt_length(mparams['dimensionY']),
                                     fmt_length(mparams['dimensionZ']))
    if has(mparams, 'faceCount'):
        t += 'face count: %s, render: %s\n' % (mparams['faceCount'], mparams['faceCountRender'])

    # write files size - this doesn't reflect true file size, since files size is computed from all asset files, including resolutions.
    if mdata.get('filesSize'):
        fs = utils.files_size_to_text(mdata['filesSize'])
        t += f'files size: {fs}\n'

    # t = writeblockm(t, mparams, key='meshPolyType', pretext='mesh type', width = col_w)
    # t = writeblockm(t, mparams, key='objectCount', pretext='nubmber of objects', width = col_w)

    # t = writeblockm(t, mparams, key='materials', width = col_w)
    # t = writeblockm(t, mparams, key='modifiers', width = col_w)
    # t = writeblockm(t, mparams, key='shaders', width = col_w)

    if has(mparams, 'textureSizeMeters'):
        t += 'texture size: %s\n' % fmt_length(mparams['textureSizeMeters'])

    if has(mparams, 'textureResolutionMax') and mparams['textureResolutionMax'] > 0:
        if not mparams.get('textureResolutionMin'):  # for HDR's
            t = writeblockm(t, mparams, key='textureResolutionMax', pretext='Resolution', width=col_w)
        elif mparams.get('textureResolutionMin') == mparams['textureResolutionMax']:
            t = writeblockm(t, mparams, key='textureResolutionMin', pretext='texture resolution', width=col_w)
        else:
            t += 'tex resolution: %i - %i\n' % (mparams.get('textureResolutionMin'), mparams['textureResolutionMax'])

    if has(mparams, 'thumbnailScale'):
        t = writeblockm(t, mparams, key='thumbnailScale', pretext='preview scale', width=col_w)

    # t += 'uv: %s\n' % mdata['uv']
    # t += '\n'
    t = writeblockm(t, mdata, key='license', width=col_w)

    fs = mdata.get('files')

    if utils.profile_is_validator():
        if fs:
            resolutions = 'resolutions:'
            for f in fs:
                if f['fileType'].find('resolution') > -1:
                    resolutions += f['fileType'][11:] + ' '
            resolutions += '\n'
            t += resolutions

        t = writeblockm(t, mdata, key='isFree', width=col_w)
    else:
        if fs:
            for f in fs:
                if f['fileType'].find('resolution') > -1:
                    t += 'Asset has lower resolutions available\n'
                    break;

    # generator is for both upload preview and search, this is only after search
    # if mdata.get('versionNumber'):
    #     # t = writeblockm(t, mdata, key='versionNumber', pretext='version', width = col_w)
    #     a_id = mdata['author'].get('id')
    #     if a_id != None:
    #         adata = bpy.context.window_manager['bkit authors'].get(str(a_id))
    #         if adata != None:
    #             t += generate_author_textblock(adata)

    # t += '\n'
    rc = mdata.get('ratingsCount')
    if rc:
        t+='\n'
        if rc:
            rcount = min(rc['quality'], rc['workingHours'])
        else:
            rcount = 0

        show_rating_threshold = 5

        if rcount < show_rating_threshold:
            t += f"Only assets with enough ratings \nshow the rating value. Please rate.\n"
        if rc['quality'] >= show_rating_threshold:
            # t += f"{int(mdata['ratingsAverage']['quality']) * '*'}\n"
            t += f"* {round(mdata['ratingsAverage']['quality'],1)}\n"
        if rc['workingHours'] >= show_rating_threshold:
            t += f"Hours saved: {int(mdata['ratingsAverage']['workingHours'])}\n"
        if utils.profile_is_validator():
            t += f"Score: {int(mdata['score'])}\n"

            t += f"Ratings count {rc['quality']}*/{rc['workingHours']}wh value " \
                 f"{(mdata['ratingsAverage']['quality'],1)}*/{(mdata['ratingsAverage']['workingHours'],1)}wh\n"
    if len(t.split('\n')) < 11:
        t += '\n'
        t += get_random_tip(mdata)
        t += '\n'
    return t


def get_random_tip(mdata):
    t = ''

    tip = 'Tip: ' + random.choice(rtips)
    t = writeblock(t, tip)
    return t
    # at = mdata['assetType']
    # if at == 'brush' or at == 'texture':
    #     t += 'click to link %s' % mdata['assetType']
    # if at == 'model' or at == 'material':
    #     tips = ['Click or drag in scene to link/append %s' % mdata['assetType'],
    #             "'A' key to search assets by same author",
    #             "'W' key to open Authors webpage",
    #             ]
    #     tip = 'Tip: ' + random.choice(tips)
    #     t = writeblock(t, tip)
    return t


def generate_author_textblock(adata):
    t = '\n\n\n'

    if adata not in (None, ''):
        col_w = 40
        if len(adata['firstName'] + adata['lastName']) > 0:
            t = 'Author:\n'
            t += '%s %s\n' % (adata['firstName'], adata['lastName'])
            t += '\n'
            if adata.get('aboutMeUrl') is not None:
                t = writeblockm(t, adata, key='aboutMeUrl', pretext='', width=col_w)
                t += '\n'
            if adata.get('aboutMe') is not None:
                t = writeblockm(t, adata, key='aboutMe', pretext='', width=col_w)
                t += '\n'
    return t


def get_items_models(self, context):
    global search_items_models
    return search_items_models


def get_items_brushes(self, context):
    global search_items_brushes
    return search_items_brushes


def get_items_materials(self, context):
    global search_items_materials
    return search_items_materials


def get_items_textures(self, context):
    global search_items_textures
    return search_items_textures


class ThumbDownloader(threading.Thread):
    query = None

    def __init__(self, url, path):
        super(ThumbDownloader, self).__init__()
        self.url = url
        self.path = path
        self._stop_event = threading.Event()

    def stop(self):
        self._stop_event.set()

    def stopped(self):
        return self._stop_event.is_set()

    def run(self):
        r = rerequests.get(self.url, stream=False)
        if r.status_code == 200:
            with open(self.path, 'wb') as f:
                f.write(r.content)
            # ORIGINALLY WE DOWNLOADED THUMBNAILS AS STREAM, BUT THIS WAS TOO SLOW.
            # with open(path, 'wb') as f:
            #     for chunk in r.iter_content(1048576*4):
            #         f.write(chunk)


def write_gravatar(a_id, gravatar_path):
    '''
    Write down gravatar path, as a result of thread-based gravatar image download.
    This should happen on timer in queue.
    '''
    # print('write author', a_id, type(a_id))
    authors = bpy.context.window_manager['bkit authors']
    if authors.get(a_id) is not None:
        adata = authors.get(a_id)
        adata['gravatarImg'] = gravatar_path


def fetch_gravatar(adata):
    # utils.p('fetch gravatar')
    if adata.get('gravatarHash') is not None:
        gravatar_path = paths.get_temp_dir(subdir='bkit_g/') + adata['gravatarHash'] + '.jpg'

        if os.path.exists(gravatar_path):
            tasks_queue.add_task((write_gravatar, (adata['id'], gravatar_path)))
            return;

        url = "https://www.gravatar.com/avatar/" + adata['gravatarHash'] + '?d=404'
        r = rerequests.get(url, stream=False)
        if r.status_code == 200:
            with open(gravatar_path, 'wb') as f:
                f.write(r.content)
            tasks_queue.add_task((write_gravatar, (adata['id'], gravatar_path)))
        elif r.status_code == '404':
            adata['gravatarHash'] = None
            utils.p('gravatar for author not available.')


fetching_gravatars = {}


def get_author(r):
    ''' Writes author info (now from search results) and fetches gravatar if needed.'''
    global fetching_gravatars

    a_id = str(r['author']['id'])
    preferences = bpy.context.preferences.addons['blenderkit'].preferences
    authors = bpy.context.window_manager.get('bkit authors', {})
    if authors == {}:
        bpy.context.window_manager['bkit authors'] = authors
    a = authors.get(a_id)
    if a is None:  # or a is '' or (a.get('gravatarHash') is not None and a.get('gravatarImg') is None):
        a = r['author']
        a['id'] = a_id
        a['tooltip'] = generate_author_textblock(a)

        authors[a_id] = a
        if fetching_gravatars.get(a['id']) is None:
            fetching_gravatars[a['id']] = True

        thread = threading.Thread(target=fetch_gravatar, args=(a.copy(),), daemon=True)
        thread.start()
    return a


def write_profile(adata):
    utils.p('writing profile information')
    user = adata['user']
    # we have to convert to MiB here, numbers too big for python int type
    if user.get('sumAssetFilesSize') is not None:
        user['sumAssetFilesSize'] /= (1024 * 1024)
    if user.get('sumPrivateAssetFilesSize') is not None:
        user['sumPrivateAssetFilesSize'] /= (1024 * 1024)
    if user.get('remainingPrivateQuota') is not None:
        user['remainingPrivateQuota'] /= (1024 * 1024)

    if adata.get('canEditAllAssets') is True:
        user['exmenu'] = True
    else:
        user['exmenu'] = False

    bpy.context.window_manager['bkit profile'] = adata


def request_profile(api_key):
    a_url = paths.get_api_url() + 'me/'
    headers = utils.get_headers(api_key)
    r = rerequests.get(a_url, headers=headers)
    adata = r.json()
    if adata.get('user') is None:
        utils.p(adata)
        utils.p('getting profile failed')
        return None
    return adata


def fetch_profile(api_key):
    utils.p('fetch profile')
    try:
        adata = request_profile(api_key)
        if adata is not None:
            tasks_queue.add_task((write_profile, (adata,)))
    except Exception as e:
        bk_logger.error(e)


def get_profile():
    preferences = bpy.context.preferences.addons['blenderkit'].preferences
    a = bpy.context.window_manager.get('bkit profile')
    thread = threading.Thread(target=fetch_profile, args=(preferences.api_key,), daemon=True)
    thread.start()
    return a


class Searcher(threading.Thread):
    query = None

    def __init__(self, query, params, orig_result):
        super(Searcher, self).__init__()
        self.query = query
        self.params = params
        self._stop_event = threading.Event()
        self.result = orig_result

    def stop(self):
        self._stop_event.set()

    def stopped(self):
        return self._stop_event.is_set()

    def query_to_url(self):
        query = self.query
        params = self.params
        # build a new request
        url = paths.get_api_url() + 'search/'

        # build request manually
        # TODO use real queries
        requeststring = '?query='
        #
        if query.get('query') not in ('', None):
            requeststring += query['query'].lower()
        for i, q in enumerate(query):
            if q != 'query':
                requeststring += '+'
                requeststring += q + ':' + str(query[q]).lower()

        # result ordering: _score - relevance, score - BlenderKit score
        order = []
        if params['free_first']:
            order = ['-is_free', ]
        if query.get('query') is None and query.get('category_subtree') == None:
            # assumes no keywords and no category, thus an empty search that is triggered on start.
            # orders by last core file upload
            if query.get('verification_status') == 'uploaded':
                # for validators, sort uploaded from oldest
                order.append('created')
            else:
                order.append('-last_upload')
        elif query.get('author_id') is not None and utils.profile_is_validator():

            order.append('-created')
        else:
            if query.get('category_subtree') is not None:
                order.append('-score,_score')
            else:
                order.append('_score')
        requeststring += '+order:' + ','.join(order)

        requeststring += '&addon_version=%s' % params['addon_version']
        if params.get('scene_uuid') is not None:
            requeststring += '&scene_uuid=%s' % params['scene_uuid']
        # print('params', params)
        urlquery = url + requeststring
        return urlquery

    def run(self):
        maxthreads = 50
        query = self.query
        params = self.params
        global reports

        t = time.time()
        mt('search thread started')
        tempdir = paths.get_temp_dir('%s_search' % query['asset_type'])
        # json_filepath = os.path.join(tempdir, '%s_searchresult.json' % query['asset_type'])

        headers = utils.get_headers(params['api_key'])

        rdata = {}
        rdata['results'] = []

        if params['get_next']:
            urlquery = self.result['next']
        if not params['get_next']:
            urlquery = self.query_to_url()

        try:
            utils.p(urlquery)
            r = rerequests.get(urlquery, headers=headers)  # , params = rparameters)
            # print(r.url)
            reports = ''
            # utils.p(r.text)
        except requests.exceptions.RequestException as e:
            bk_logger.error(e)
            reports = e
            # props.report = e
            return
        mt('search response is back ')
        try:
            rdata = r.json()
        except Exception as e:
            reports = r.text
            bk_logger.error(e)

        mt('data parsed ')
        if not rdata.get('results'):
            utils.pprint(rdata)
            # if the result was converted to json and didn't return results,
            # it means it's a server error that has a clear message.
            # That's why it gets processed in the update timer, where it can be passed in messages to user.
            self.result = rdata
            return
        # print('number of results: ', len(rdata.get('results', [])))
        if self.stopped():
            utils.p('stopping search : ' + str(query))
            return

        mt('search finished')
        i = 0

        thumb_small_urls = []
        thumb_small_filepaths = []
        thumb_full_urls = []
        thumb_full_filepaths = []
        # END OF PARSING
        for d in rdata.get('results', []):

            get_author(d)

            for f in d['files']:
                # TODO move validation of published assets to server, too manmy checks here.
                if f['fileType'] == 'thumbnail' and f['fileThumbnail'] != None and f['fileThumbnailLarge'] != None:
                    if f['fileThumbnail'] == None:
                        f['fileThumbnail'] = 'NONE'
                    if f['fileThumbnailLarge'] == None:
                        f['fileThumbnailLarge'] = 'NONE'

                    thumb_small_urls.append(f['fileThumbnail'])
                    thumb_full_urls.append(f['fileThumbnailLarge'])

                    imgname = paths.extract_filename_from_url(f['fileThumbnail'])
                    imgpath = os.path.join(tempdir, imgname)
                    thumb_small_filepaths.append(imgpath)

                    imgname = paths.extract_filename_from_url(f['fileThumbnailLarge'])
                    imgpath = os.path.join(tempdir, imgname)
                    thumb_full_filepaths.append(imgpath)

        sml_thbs = zip(thumb_small_filepaths, thumb_small_urls)
        full_thbs = zip(thumb_full_filepaths, thumb_full_urls)

        # we save here because a missing thumbnail check is in the previous loop
        # we can also prepend previous results. These have downloaded thumbnails already...
        if params['get_next']:
            rdata['results'][0:0] = self.result['results']
        self.result = rdata
        # with open(json_filepath, 'w', encoding = 'utf-8') as outfile:
        #     json.dump(rdata, outfile, ensure_ascii=False, indent=4)

        killthreads_sml = []
        for k in thumb_sml_download_threads.keys():
            if k not in thumb_small_filepaths:
                killthreads_sml.append(k)  # do actual killing here?

        killthreads_full = []
        for k in thumb_full_download_threads.keys():
            if k not in thumb_full_filepaths:
                killthreads_full.append(k)  # do actual killing here?
        # TODO do the killing/ stopping here! remember threads might have finished inbetween!

        if self.stopped():
            utils.p('stopping search : ' + str(query))
            return

        # this loop handles downloading of small thumbnails
        for imgpath, url in sml_thbs:
            if imgpath not in thumb_sml_download_threads and not os.path.exists(imgpath):
                thread = ThumbDownloader(url, imgpath)
                # thread = threading.Thread(target=download_thumbnail, args=([url, imgpath]),
                #                           daemon=True)
                thread.start()
                thumb_sml_download_threads[imgpath] = thread
                # threads.append(thread)

                if len(thumb_sml_download_threads) > maxthreads:
                    while len(thumb_sml_download_threads) > maxthreads:
                        threads_copy = thumb_sml_download_threads.copy()  # because for loop can erase some of the items.
                        for tk, thread in threads_copy.items():
                            if not thread.is_alive():
                                thread.join()
                                # utils.p(x)
                                del (thumb_sml_download_threads[tk])
                                # utils.p('fetched thumbnail ', i)
                                i += 1
        if self.stopped():
            utils.p('stopping search : ' + str(query))
            return
        idx = 0
        while len(thumb_sml_download_threads) > 0:
            threads_copy = thumb_sml_download_threads.copy()  # because for loop can erase some of the items.
            for tk, thread in threads_copy.items():
                if not thread.is_alive():
                    thread.join()
                    del (thumb_sml_download_threads[tk])
                    i += 1

        if self.stopped():
            utils.p('stopping search : ' + str(query))
            return

        # start downloading full thumbs in the end
        for imgpath, url in full_thbs:
            if imgpath not in thumb_full_download_threads and not os.path.exists(imgpath):
                thread = ThumbDownloader(url, imgpath)
                # thread = threading.Thread(target=download_thumbnail, args=([url, imgpath]),
                #                           daemon=True)
                thread.start()
                thumb_full_download_threads[imgpath] = thread
        mt('thumbnails finished')


def build_query_common(query, props):
    '''add shared parameters to query'''
    query_common = {}
    if props.search_keywords != '':
        query_common["query"] = props.search_keywords

    if props.search_verification_status != 'ALL':
        query_common['verification_status'] = props.search_verification_status.lower()

    if props.unrated_only:
        query["quality_count"] = 0

    if props.search_file_size:
        query_common["files_size_gte"] = props.search_file_size_min * 1024 * 1024
        query_common["files_size_lte"] = props.search_file_size_max * 1024 * 1024

    query.update(query_common)


def build_query_model():
    '''use all search input to request results from server'''

    props = bpy.context.scene.blenderkit_models
    query = {
        "asset_type": 'model',
        # "engine": props.search_engine,
        # "adult": props.search_adult,
    }
    if props.search_style != 'ANY':
        if props.search_style != 'OTHER':
            query["model_style"] = props.search_style
        else:
            query["model_style"] = props.search_style_other

    # the 'free_only' parametr gets moved to the search command and is used for ordering the assets as free first
    # if props.free_only:
    #     query["is_free"] = True

    # if props.search_advanced:
    if props.search_condition != 'UNSPECIFIED':
        query["condition"] = props.search_condition
    if props.search_design_year:
        query["designYear_gte"] = props.search_design_year_min
        query["designYear_lte"] = props.search_design_year_max
    if props.search_polycount:
        query["faceCount_gte"] = props.search_polycount_min
        query["faceCount_lte"] = props.search_polycount_max
    if props.search_texture_resolution:
        query["textureResolutionMax_gte"] = props.search_texture_resolution_min
        query["textureResolutionMax_lte"] = props.search_texture_resolution_max

    build_query_common(query, props)

    return query


def build_query_scene():
    '''use all search input to request results from server'''

    props = bpy.context.scene.blenderkit_scene
    query = {
        "asset_type": 'scene',
        # "engine": props.search_engine,
        # "adult": props.search_adult,
    }
    build_query_common(query, props)
    return query


def build_query_HDR():
    '''use all search input to request results from server'''

    props = bpy.context.scene.blenderkit_HDR
    query = {
        "asset_type": 'hdr',
        # "engine": props.search_engine,
        # "adult": props.search_adult,
    }
    build_query_common(query, props)
    return query


def build_query_material():
    props = bpy.context.scene.blenderkit_mat
    query = {
        "asset_type": 'material',

    }
    # if props.search_engine == 'NONE':
    #     query["engine"] = ''
    # if props.search_engine != 'OTHER':
    #     query["engine"] = props.search_engine
    # else:
    #     query["engine"] = props.search_engine_other
    if props.search_style != 'ANY':
        if props.search_style != 'OTHER':
            query["style"] = props.search_style
        else:
            query["style"] = props.search_style_other
    if props.search_procedural == 'TEXTURE_BASED':
        # todo this procedural hack should be replaced with the parameter
        query["textureResolutionMax_gte"] = 0
        # query["procedural"] = False
        if props.search_texture_resolution:
            query["textureResolutionMax_gte"] = props.search_texture_resolution_min
            query["textureResolutionMax_lte"] = props.search_texture_resolution_max



    elif props.search_procedural == "PROCEDURAL":
        # todo this procedural hack should be replaced with the parameter
        query["files_size_lte"] = 1024 * 1024
        # query["procedural"] = True

    build_query_common(query, props)

    return query


def build_query_texture():
    props = bpy.context.scene.blenderkit_tex
    query = {
        "asset_type": 'texture',

    }

    if props.search_style != 'ANY':
        if props.search_style != 'OTHER':
            query["search_style"] = props.search_style
        else:
            query["search_style"] = props.search_style_other

    build_query_common(query, props)

    return query


def build_query_brush():
    props = bpy.context.scene.blenderkit_brush

    brush_type = ''
    if bpy.context.sculpt_object is not None:
        brush_type = 'sculpt'

    elif bpy.context.image_paint_object:  # could be just else, but for future p
        brush_type = 'texture_paint'

    query = {
        "asset_type": 'brush',

        "mode": brush_type
    }

    build_query_common(query, props)

    return query


def mt(text):
    global search_start_time, prev_time
    alltime = time.time() - search_start_time
    since_last = time.time() - prev_time
    prev_time = time.time()
    utils.p(text, alltime, since_last)


def add_search_process(query, params, orig_result):
    global search_threads

    while (len(search_threads) > 0):
        old_thread = search_threads.pop(0)
        old_thread[0].stop()
        # TODO CARE HERE FOR ALSO KILLING THE Thumbnail THREADS.?
        #  AT LEAST NOW SEARCH DONE FIRST WON'T REWRITE AN OLDER ONE
    tempdir = paths.get_temp_dir('%s_search' % query['asset_type'])
    thread = Searcher(query, params, orig_result)
    thread.start()

    search_threads.append([thread, tempdir, query['asset_type'], {}])  # 4th field is for results

    mt('search thread started')


def get_search_simple(parameters, filepath=None, page_size=100, max_results=100000000, api_key=''):
    '''
    Searches and returns the


    Parameters
    ----------
    parameters - dict of blenderkit elastic parameters
    filepath - a file to save the results. If None, results are returned
    page_size - page size for retrieved results
    max_results - max results of the search
    api_key - BlenderKit api key

    Returns
    -------
    Returns search results as a list, and optionally saves to filepath

    '''
    headers = utils.get_headers(api_key)
    url = paths.get_api_url() + 'search/'
    requeststring = url + '?query='
    for p in parameters.keys():
        requeststring += f'+{p}:{parameters[p]}'

    requeststring += '&page_size=' + str(page_size)
    bk_logger.debug(requeststring)
    response = rerequests.get(requeststring, headers=headers)  # , params = rparameters)
    # print(r.json())
    search_results = response.json()

    results = []
    results.extend(search_results['results'])
    page_index = 2
    page_count = math.ceil(search_results['count'] / page_size)
    while search_results.get('next') and len(results) < max_results:
        bk_logger.info(f'getting page {page_index} , total pages {page_count}')
        response = rerequests.get(search_results['next'], headers=headers)  # , params = rparameters)
        search_results = response.json()
        # print(search_results)
        results.extend(search_results['results'])
        page_index += 1

    if not filepath:
        return results

    with open(filepath, 'w', encoding='utf-8') as s:
        json.dump(results, s, ensure_ascii=False, indent=4)
    bk_logger.info(f'retrieved {len(results)} assets from elastic search')
    return results


def search(category='', get_next=False, author_id=''):
    ''' initialize searching'''
    global search_start_time
    user_preferences = bpy.context.preferences.addons['blenderkit'].preferences
    search_start_time = time.time()
    # mt('start')
    scene = bpy.context.scene
    ui_props = scene.blenderkitUI

    if ui_props.asset_type == 'MODEL':
        if not hasattr(scene, 'blenderkit'):
            return;
        props = scene.blenderkit_models
        query = build_query_model()

    if ui_props.asset_type == 'SCENE':
        if not hasattr(scene, 'blenderkit_scene'):
            return;
        props = scene.blenderkit_scene
        query = build_query_scene()

    if ui_props.asset_type == 'HDR':
        if not hasattr(scene, 'blenderkit_HDR'):
            return;
        props = scene.blenderkit_HDR
        query = build_query_HDR()

    if ui_props.asset_type == 'MATERIAL':
        if not hasattr(scene, 'blenderkit_mat'):
            return;

        props = scene.blenderkit_mat
        query = build_query_material()

    if ui_props.asset_type == 'TEXTURE':
        if not hasattr(scene, 'blenderkit_tex'):
            return;
        # props = scene.blenderkit_tex
        # query = build_query_texture()

    if ui_props.asset_type == 'BRUSH':
        if not hasattr(scene, 'blenderkit_brush'):
            return;
        props = scene.blenderkit_brush
        query = build_query_brush()

    # it's possible get_net was requested more than once.
    if props.is_searching and get_next == True:
        return;

    if category != '':
        if utils.profile_is_validator():
            query['category'] = category
        else:
            query['category_subtree'] = category

    if author_id != '':
        query['author_id'] = author_id

    elif props.own_only:
        # if user searches for [another] author, 'only my assets' is invalid. that's why in elif.
        profile = bpy.context.window_manager.get('bkit profile')
        if profile is not None:
            query['author_id'] = str(profile['user']['id'])

    # utils.p('searching')
    props.is_searching = True

    params = {
        'scene_uuid': bpy.context.scene.get('uuid', None),
        'addon_version': version_checker.get_addon_version(),
        'api_key': user_preferences.api_key,
        'get_next': get_next,
        'free_first': props.free_only
    }

    # if free_only:
    #     query['keywords'] += '+is_free:true'
    orig_results = bpy.context.window_manager.get(f'bkit {ui_props.asset_type.lower()} search orig', {})
    if orig_results != {}:
        # ensure it's a copy in dict for what we are passing to thread:
        orig_results = orig_results.to_dict()
    add_search_process(query, params, orig_results)
    tasks_queue.add_task((ui.add_report, ('BlenderKit searching....', 2)))

    props.report = 'BlenderKit searching....'


def search_update(self, context):
    utils.p('search updater')
    # if self.search_keywords != '':
    ui_props = bpy.context.scene.blenderkitUI
    if ui_props.down_up != 'SEARCH':
        ui_props.down_up = 'SEARCH'

    # here we tweak the input if it comes form the clipboard. we need to get rid of asset type and set it in UI
    sprops = utils.get_search_props()
    instr = 'asset_base_id:'
    atstr = 'asset_type:'
    kwds = sprops.search_keywords
    idi = kwds.find(instr)
    ati = kwds.find(atstr)
    # if the asset type already isn't there it means this update function
    # was triggered by it's last iteration and needs to cancel
    if ati > -1:
        at = kwds[ati:].lower()
        # uncertain length of the remaining string -  find as better method to check the presence of asset type
        if at.find('model') > -1:
            ui_props.asset_type = 'MODEL'
        elif at.find('material') > -1:
            ui_props.asset_type = 'MATERIAL'
        elif at.find('brush') > -1:
            ui_props.asset_type = 'BRUSH'
        elif at.find('scene') > -1:
            ui_props.asset_type = 'SCENE'
        elif at.find('hdr') > -1:
            ui_props.asset_type = 'HDR'
        # now we trim the input copypaste by anything extra that is there,
        # this is also a way for this function to recognize that it already has parsed the clipboard
        # the search props can have changed and this needs to transfer the data to the other field
        # this complex behaviour is here for the case where the user needs to paste manually into blender?
        sprops = utils.get_search_props()
        sprops.search_keywords = kwds[:ati].rstrip()
        # return here since writing into search keywords triggers this update function once more.
        return

    search()


class SearchOperator(Operator):
    """Tooltip"""
    bl_idname = "view3d.blenderkit_search"
    bl_label = "BlenderKit asset search"
    bl_description = "Search online for assets"
    bl_options = {'REGISTER', 'UNDO', 'INTERNAL'}
    own: BoolProperty(name="own assets only",
                      description="Find all own assets",
                      default=False)

    category: StringProperty(
        name="category",
        description="search only subtree of this category",
        default="",
        options={'SKIP_SAVE'}
    )

    author_id: StringProperty(
        name="Author ID",
        description="Author ID - search only assets by this author",
        default="",
        options={'SKIP_SAVE'}
    )

    get_next: BoolProperty(name="next page",
                           description="get next page from previous search",
                           default=False,
                           options={'SKIP_SAVE'}
                           )

    keywords: StringProperty(
        name="Keywords",
        description="Keywords",
        default="",
        options={'SKIP_SAVE'}
    )

    @classmethod
    def poll(cls, context):
        return True

    def execute(self, context):
        # TODO ; this should all get transferred to properties of the search operator, so sprops don't have to be fetched here at all.
        sprops = utils.get_search_props()
        if self.author_id != '':
            sprops.search_keywords = ''
        if self.keywords != '':
            sprops.search_keywords = self.keywords

        search(category=self.category, get_next=self.get_next, author_id=self.author_id)
        # bpy.ops.view3d.blenderkit_asset_bar()

        return {'FINISHED'}


classes = [
    SearchOperator
]


def register_search():
    bpy.app.handlers.load_post.append(scene_load)

    for c in classes:
        bpy.utils.register_class(c)

    user_preferences = bpy.context.preferences.addons['blenderkit'].preferences
    if user_preferences.use_timers:
        bpy.app.timers.register(timer_update)

    categories.load_categories()


def unregister_search():
    bpy.app.handlers.load_post.remove(scene_load)

    for c in classes:
        bpy.utils.unregister_class(c)

    if bpy.app.timers.is_registered(timer_update):
        bpy.app.timers.unregister(timer_update)
