# SPDX-License-Identifier: GPL-2.0-or-later

import bpy
import importlib
import re
import vse_toolbox

from bpy_extras.io_utils import ImportHelper 
from bpy.props import (
    CollectionProperty,
    BoolProperty,
    EnumProperty,
    IntProperty,
    StringProperty,
)
from bpy.types import (
    Operator,
)
from pathlib import Path
from vse_toolbox.constants import (
    ASSETS,
    EDITS,
    MOVIES,
    SOUNDS,
    EDIT_SUFFIXES,
    MOVIE_SUFFIXES,
    SOUND_SUFFIXES,
)
from vse_toolbox.sequencer_utils import (
    clean_sequencer,
    get_shot_sequence,
    get_strips,
    get_active_strip,
    import_edit,
    import_movie,
    import_sound,
    rename_strips,
    render_strips,
    set_channels,
)
from vse_toolbox.bl_utils import get_addon_prefs, get_settings
from vse_toolbox.file_utils import install_module, norm_name, norm_str

class VSETB_OT_export_csv(Operator):
    bl_idname = "sequencer.export_csv"
    bl_label = "Set Scene"
    bl_description = "Set Scene for Breakdown"
    bl_options = {"REGISTER", "UNDO"}

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

    def execute(self, context):
        self.report({'ERROR'}, f'Export not implemented yet.')

        return {"CANCELLED"}


class VSETB_OT_auto_select_files(Operator):
    bl_idname = "import.auto_select_files"
    bl_label = "Auto Select"
    bl_description = "Auto Select Files"
    bl_options = {"REGISTER", "UNDO"}

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

    def get_items(self, items=[]):
        if not items:
            return [('NONE', 'None', '', 0)]
        return [(e, e, '', i) for i, e in enumerate(sorted(items))]

    def execute(self, context):
        params = context.space_data.params
        directory = Path(params.directory.decode())
        
        EDITS.clear()
        MOVIES.clear()
        SOUNDS.clear()
        
        edits = []
        movies = []
        sounds = []

        for file_entry in directory.glob('*'):
            if file_entry.is_dir():
                continue

            if file_entry.suffix in EDIT_SUFFIXES:
                edits.append(file_entry.name)
            elif file_entry.suffix in MOVIE_SUFFIXES:
                movies.append(file_entry.name)
            elif file_entry.suffix in SOUND_SUFFIXES:
                sounds.append(file_entry.name)

        EDITS.extend(self.get_items(items=edits))
        MOVIES.extend(self.get_items(items=movies))
        SOUNDS.extend(self.get_items(items=sounds))

        return {'FINISHED'}


# class VSETB_OT_select_file(Operator):
#     bl_idname = "import.select_file"
#     bl_label = "Select File"
#     bl_description = "Select Active as File"
#     bl_options = {"REGISTER", "UNDO"}

#     type : StringProperty('')

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

#     def execute(self, context):
#         params = context.space_data.params

#         print(params.filename)
#         if self.type == 'edit':
#             bpy.ops.sequencer.import_files(edit=params.filename)
#         elif self.type == 'movie':
#             bpy.ops.sequencer.import_files(movie=params.filename)
#         elif self.type == 'sound':
#             bpy.ops.sequencer.import_files(sound=params.filename)

#         return {'FINISHED'}


class VSETB_OT_import_files(Operator):
    bl_idname = "sequencer.import_files"
    bl_label = "Import"
    bl_description = "Import Edit"
    bl_options = {"REGISTER", "UNDO"}
    
    directory : StringProperty(subtype='DIR_PATH')
    filepath: StringProperty(
        name="File Path",
        description="Filepath used for importing the file",
        maxlen=1024,
        subtype='FILE_PATH',
    )
    files : CollectionProperty(type=bpy.types.OperatorFileListElement)
    clean_sequencer : BoolProperty(
        name="Clean Sequencer",
        default=False,
        description="Clean all existing strips in sequencer",
    )
    
    import_edit : BoolProperty(name='', default=True)
    edit: EnumProperty(name='', items=lambda s, c: EDITS)

    import_movie : BoolProperty(name='', default=False)
    movie: EnumProperty(name='', items=lambda s, c: MOVIES)

    import_sound : BoolProperty(name='', default=False)
    sound: EnumProperty(name='', items=lambda s, c: SOUNDS)

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

    def draw(self, context):
        scn = context.scene
        settings = get_settings()

        layout = self.layout
        layout.use_property_split = True 
        layout.use_property_decorate = False

        col = layout.column(align=True)
        col.operator('import.auto_select_files', text='Auto Select')

        row = self.layout.row(heading="Import Edit", align=True)
        row.prop(self, 'import_edit')
        sub = row.row(align=True)
        sub.active = self.import_edit
        sub.prop(self, 'edit')
        # op = sub.operator('import.select_file', text="", icon='EYEDROPPER')
        # op.type = 'edit'

        row = self.layout.row(heading="Import Movie", align=True)
        row.prop(self, 'import_movie')
        sub = row.row()
        sub.active = self.import_movie
        sub.prop(self, 'movie')
        # op = sub.operator('import.select_file', text="", icon='EYEDROPPER')
        # op.type = 'movie'

        row = self.layout.row(heading="Import Sound", align=True)
        row.prop(self, 'import_sound')
        sub = row.row()
        sub.active = self.import_sound
        sub.prop(self, 'sound')
        # op = sub.operator('import.select_file', text="", icon='EYEDROPPER')
        # op.type = 'sound'

        col = layout.column()
        col.separator()
        col.prop(self, 'clean_sequencer')

    def invoke(self, context, event):
        context.window_manager.fileselect_add(self)
        return {'RUNNING_MODAL'}

    def execute(self, context):
        otio = install_module('opentimelineio')

        edit_filepath = Path(self.directory, self.edit)
        if not edit_filepath.exists():
            self.import_edit = False

        movie_filepath = Path(self.directory, self.movie)
        if not movie_filepath.exists():
            self.import_movie = False
        
        sound_filepath = Path(self.directory, self.sound)
        if not sound_filepath.exists():
            self.import_sound = False
        
        if self.clean_sequencer:
            clean_sequencer(
                edit=self.import_edit,
                movie=self.import_movie,
                sound=self.import_sound,
            )
        
        if self.import_edit:
            print(f'[>.] Loading Edit from: {str(edit_filepath)}')
            import_edit(edit_filepath, adapter="cmx_3600")
        
        if self.import_movie:
            print(f'[>.] Loading Movie from: {str(movie_filepath)}')
            import_movie(movie_filepath)

        if self.import_sound:
            print(f'[>.] Loading Audio from: {str(sound_filepath)}')
            import_sound(sound_filepath)
        elif not self.import_sound and self.import_movie:
            print(f'[>.] Loading Audio from Movie: {str(movie_filepath)}')
            import_sound(movie_filepath)
        
        context.scene.sequence_editor.sequences.update()

        return {"FINISHED"}


class VSETB_OT_load_assets(Operator):
    bl_idname = "vse_toolbox.load_assets"
    bl_label = "Load Assets for current projects"
    bl_description = "Load Assets"
    bl_options = {"REGISTER", "UNDO"}

    @classmethod
    def poll(cls, context):
        settings = get_settings()
        if settings.active_project:
            return True

    def get_items(self, items=[]):
        if not items:
            return [('NONE', 'None', '', 0)]
        
        icons = {
            'camera':'CAMERA_DATA',
            'chars':'COMMUNITY',
            'props':'OBJECT_DATAMODE',
            'sets':'SMOOTHCURVE',
        }
        # return [(e.name, e.norm_name, '', i) for i, e in enumerate(items)] 
        return [(e.name, e.name, '', icons[e.asset_type], i) for i, e in enumerate(items)] 

    def execute(self, context):
        settings = get_settings()
        prefs = get_addon_prefs()
        tracker = prefs.tracker
        
        ASSETS.clear()
        settings.active_project.assets.clear()
        
        project = settings.active_project
        assets = tracker.get_assets(project['id'])
        if not assets:
            self.report({'ERROR'}, f'No Assets found for {project.name}.')
        for asset_data in assets:            
            asset = project.assets.add()
            asset.name = asset_data['name']
            # asset.norm_name = norm_name(asset_data['name'], separator=' ', format=str.title)
            asset.id = asset_data['id']
            asset.asset_type = asset_data['asset_type']
            
        ASSETS.extend(self.get_items(items=project.assets))

        self.report({'INFO'}, f'Assets for {project.name} successfully loaded')
        return {"FINISHED"}


class VSETB_OT_load_projects(Operator):
    bl_idname = "vse_toolbox.load_projects"
    bl_label = "Load Projects"
    bl_description = "Load Projects"
    bl_options = {"REGISTER", "UNDO"}

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

    def execute(self, context):
        settings = get_settings()
        prefs = get_addon_prefs()
        tracker = prefs.tracker
        
        settings.projects.clear()
        tracker.connect()

        for project_data in tracker.get_projects():
            project = settings.projects.add()
            project.name = project_data['name']
            project.id = project_data['id']

            for episode_data in tracker.get_episodes(project_data):
                episode = project.episodes.add()
                episode.name = episode_data['name']
                episode.id = episode_data['id']
            
            # for asset_data in tracker.get_assets(project_data):
            #     asset = project.assets.add()
            #     asset.name = asset_data['name']
            #     asset.id = asset_data['id']
            #     asset.asset_type = asset_data['asset_type']

        return {'FINISHED'}


class VSETB_OT_new_episode(Operator):
    bl_idname = "vse_toolbox.new_episode"
    bl_label = "New Epispde"
    bl_description = "Add new Episode to Project"
    bl_options = {"REGISTER", "UNDO"}

    episode_name : StringProperty(name="Episode Name", default="")

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

    def invoke(self, context, event):
        scn = context.scene
        settings = get_settings()
        
        return context.window_manager.invoke_props_dialog(self)

    def execute(self, context):
        settings = get_settings()
        prefs = get_addon_prefs()
        tracker = prefs.tracker

        episode_name = settings.episode_template.format(index=int(self.episode_name))
        
        print(self.episode_name)
        print('episode_name: ', episode_name)

        episode = tracker.get_episode(episode_name)
        if episode:
            self.report({'ERROR'}, f'Episode {episode_name} already exists')
            return {"CANCELLED"}
        
        tracker.new_episode(episode_name)
        # tracker.get_episodes
        tracker.update_project()
        self.report({'INFO'}, f'Episode {episode_name} successfully created')
        return {'FINISHED'}  
        
        
class VSETB_OT_reload_addon(Operator):
    bl_idname = "vse_toolbox.reload_addon"
    bl_options = {"UNDO"}
    bl_label = 'Reload VSE ToolBox Addon'
    bl_description = 'Reload The VSE ToolBox Addon'

    def execute(self, context):

        print('Execute reload')

        vse_toolbox.unregister()
        importlib.reload(vse_toolbox)
        vse_toolbox.register()

        return {'FINISHED'}


class VSETB_OT_rename(Operator):
    bl_idname = "sequencer.strips_rename"
    bl_label = "Rename Strips"
    bl_description = "Rename Strips"
    bl_options = {"REGISTER", "UNDO"}

    template : StringProperty(name="Strip Template Name", default="")
    increment : IntProperty(name="Name Increment", default=0)
    channel_name : StringProperty(name="Channel Name", default="")
    selected_only : BoolProperty(name="Selected Only", default=False)
    start_number : IntProperty(name="Start Number", default=0, min=0)
    by_sequence : BoolProperty(
        name="Reset By Sequence",
        description="Reset Start Number for each sequence",
        default=False
    )

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

    def invoke(self, context, event):
        scn = context.scene
        settings = get_settings()
        
        return context.window_manager.invoke_props_dialog(self)

    def draw(self, context):
        scn = context.scene
        settings = get_settings()

        layout = self.layout
        col = layout.column()
        col.use_property_split = True 
        col.prop(self, 'template')
        col.prop(self, 'start_number')
        if self.channel_name == 'Shots':
            col.prop(self, 'by_sequence')
        col.prop(self, 'selected_only')

    def execute(self, context):
        scn = context.scene   
        strips = get_strips(channel=self.channel_name, selected_only=self.selected_only)
        
        rename_strips(
            strips, self.template,
            increment=self.increment, start_number=self.start_number,
            by_sequence=self.by_sequence
        )

        return {"FINISHED"}
        

class VSETB_OT_render(Operator):
    bl_idname = "sequencer.strips_render"
    bl_label = "Render Shots Strips"
    bl_description = "Render Shots Strips"
    bl_options = {"REGISTER", "UNDO"}

    selected_only : BoolProperty(name="Selected Only", default=False)

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

    def invoke(self, context, event):
        scn = context.scene
        settings = get_settings()
        
        return context.window_manager.invoke_props_dialog(self)

    def draw(self, context):
        scn = context.scene
        settings = get_settings()

        layout = self.layout
        col = layout.column()
        col.use_property_split = True
        col.use_property_decorate = False
        col.prop(settings, 'channel', text='Channel')
        col.prop(self, 'selected_only')

    def execute(self, context):
        scn = context.scene
        settings = get_settings()
        strips = get_strips(channel=settings.channel, selected_only=self.selected_only)
        
        render_strips(strips)

        return {"FINISHED"}


class VSETB_OT_set_scene(Operator):
    bl_idname = "vse_toolbox.set_scene"
    bl_label = "Set Scene"
    bl_description = "Set Scene for Breakdown"
    bl_options = {"REGISTER", "UNDO"}

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

    def execute(self, context):
        scn = context.scene   

        set_channels()
        movie = get_strips(channel='Movie')
        if movie:
            movie = movie[0]
            movie.transform.scale_x = movie.transform.scale_y = 1
            elem = movie.strip_elem_from_frame(scn.frame_current)
            scn.render.resolution_x = elem.orig_width
            scn.render.resolution_y = elem.orig_height
        else:
            self.report({'INFO'}, f'Cannot set Resolution. No Movie Found.')
        
        return {"FINISHED"}


class VSETB_OT_casting_add(Operator):
    bl_idname = "vse_toolbox.casting_add"
    bl_label = "Casting Add"
    bl_description = "Add Asset to Castin"
    bl_options = {"REGISTER", "UNDO"}
    bl_property = "asset_name"

    asset_name : EnumProperty(name='', items=lambda s, c: ASSETS)
    
    @classmethod
    def poll(cls, context):
        active_strip = context.scene.sequence_editor.active_strip
        if active_strip:
            return True
    
    def invoke(self, context, event):
        context.window_manager.invoke_search_popup(self)
        return {"FINISHED"}
    
    def execute(self, context):
        scn = context.scene
        settings = get_settings()
        active_strip = scn.sequence_editor.active_strip
        project = settings.active_project

        if active_strip.casting.get(self.asset_name):
            self.report({'WARNING'}, f"Asset {self.asset_name} already casted.") 
            return {"CANCELLED"}

        item = active_strip.casting.add()
        item.name = self.asset_name
        item.asset_type = project.assets[self.asset_name].asset_type

        active_strip.casting.update()
        
        return {"FINISHED"}


class VSETB_OT_casting_actions(Operator):
    bl_idname = "vse_toolbox.casting_actions"
    bl_label = "Casting Actions"
    bl_description = "Actions to Add, Remove, Move casting items"
    bl_options = {"REGISTER", "UNDO"}

    action: EnumProperty(
        items=(
            ('UP', "Up", ""),
            ('DOWN', "Down", ""),
            ('REMOVE', "Remove", ""),
        )
    )

    asset_name : StringProperty()

    @classmethod
    def poll(cls, context):
        active_strip = context.scene.sequence_editor.active_strip
        if active_strip:
            return True

    def invoke(self, context, event):
        scn = context.scene
        
        active_strip = scn.sequence_editor.active_strip
        idx = active_strip.casting_index

        try:
            item = active_strip.casting[idx]
        except IndexError:
            pass
        else:
            if self.action == 'DOWN' and idx < len(active_strip.casting) - 1:
                item_next = active_strip.casting[idx+1].name
                active_strip.casting.move(idx, idx+1)
                active_strip.casting_index += 1

                info = f"Item {item.name} moved to position {(item.name, active_strip.casting_index + 1)}"
                self.report({'INFO'}, info)

            elif self.action == 'UP' and idx >= 1:
                item_prev = active_strip.casting[idx-1].name
                active_strip.casting.move(idx, idx-1)
                active_strip.casting_index -= 1

                info = f"Item {item.name} moved to position {(item.name, active_strip.casting_index + 1)}"
                self.report({'INFO'}, info)

            elif self.action == 'REMOVE':
                item = active_strip.casting[active_strip.casting_index]
                active_strip.casting.remove(idx)

                if active_strip.casting_index == 0:
                    active_strip.casting_index = 0
                else:
                    active_strip.casting_index -= 1
                    
                info = f"Item {item.name} removed from casting"
                self.report({'INFO'}, info)

        return {"FINISHED"}


classes=(
    VSETB_OT_auto_select_files,
    VSETB_OT_casting_add,
    VSETB_OT_casting_actions,
    VSETB_OT_export_csv,
    VSETB_OT_import_files,
    VSETB_OT_load_assets,
    VSETB_OT_load_projects,
    VSETB_OT_new_episode,
    VSETB_OT_reload_addon,
    VSETB_OT_rename,
    VSETB_OT_render,
    # VSETB_OT_select_file,
    VSETB_OT_set_scene,
)

def register(): 
    for cls in classes:
        bpy.utils.register_class(cls)

def unregister():
    for cls in reversed(classes):
        bpy.utils.unregister_class(cls)