import {
  BadRequestException,
  Body,
  Controller,
  Delete,
  Get,
  Param,
  Patch,
  Post,
  Put,
  Query,
  Res,
  StreamableFile,
  UploadedFile,
  UseGuards,
  UseInterceptors,
} from '@nestjs/common';
import { FileInterceptor } from '@nestjs/platform-express';
import { memoryStorage } from 'multer';
import type { Response } from 'express';
import { JwtAuthGuard } from '../auth/jwt-auth.guard';
import { RequirePermission, SectionPermissionGuard } from '../auth/section-permission.guard';
import { RolesGuard } from '../auth/roles.guard';
import { Roles } from '../auth/roles.decorator';
import { CurrentUser } from '../auth/current-user.decorator';
import type { Actor } from '../common/record-scope';
import { ActivitiesService } from './activities.service';
import { ActivitiesExcelService } from './activities-excel.service';
import { ActivityStagesService } from './activity-stages.service';
import { ActivityTypesService } from './activity-types.service';
import {
  CreateActivityBoardDto,
  CreateActivityDto,
  CreateActivityStageDto,
  CreateActivityTypeDto,
  ImportActivityRowsDto,
  ListActivitiesQueryDto,
  ListActivityStagesQueryDto,
  MoveActivityStageDto,
  ReorderActivityStagesDto,
  ReorderActivityTypesDto,
  UpdateActivityBoardDto,
  UpdateActivityDto,
  UpdateActivityPrioritiesDto,
  UpdateActivityStageDto,
  UpdateActivityTypeDto,
} from './dto';
import { brand } from '@mento/shared';

const excelUpload = FileInterceptor('file', {
  storage: memoryStorage(),
  limits: { fileSize: 15_000_000 },
});

@Controller('activities')
@UseGuards(JwtAuthGuard, SectionPermissionGuard)
@RequirePermission('activities')
export class ActivitiesController {
  constructor(
    private readonly activitiesService: ActivitiesService,
    private readonly excelService: ActivitiesExcelService,
    private readonly stagesService: ActivityStagesService,
    private readonly typesService: ActivityTypesService,
  ) {}

  @Get('summary')
  summary(
    @CurrentUser() user: Actor,
    @Query('desk') desk?: string,
  ) {
    const scope = desk === 'mine' || desk === 'team' ? desk : undefined;
    return this.activitiesService.summary(user.organizationId, user, scope);
  }

  @Get('boards')
  listBoards(@CurrentUser() user: Actor) {
    return this.stagesService.listBoards(user.organizationId, user);
  }

  @Post('boards')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  createBoard(@CurrentUser() user: Actor, @Body() dto: CreateActivityBoardDto) {
    return this.stagesService.createBoard(user.organizationId, dto.name, dto.memberIds);
  }

  @Patch('boards/:id')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  updateBoard(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Body() dto: UpdateActivityBoardDto,
  ) {
    return this.stagesService.updateBoard(user.organizationId, id, dto);
  }

  @Delete('boards/:id')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  async removeBoard(@CurrentUser() user: Actor, @Param('id') id: string) {
    await this.stagesService.removeBoard(user.organizationId, id);
    return { ok: true };
  }

  @Get('stages')
  listStages(@CurrentUser() user: Actor, @Query() query: ListActivityStagesQueryDto) {
    return this.stagesService.list(user.organizationId, query.boardId, user);
  }

  @Post('stages')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  createStage(@CurrentUser() user: Actor, @Body() dto: CreateActivityStageDto) {
    return this.stagesService.create(user.organizationId, dto);
  }

  @Patch('stages/reorder')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  reorderStages(@CurrentUser() user: Actor, @Body() dto: ReorderActivityStagesDto) {
    return this.stagesService.reorder(user.organizationId, dto.stageIds);
  }

  @Patch('stages/:id')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  updateStage(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Body() dto: UpdateActivityStageDto,
  ) {
    return this.stagesService.update(user.organizationId, id, dto);
  }

  @Delete('stages/:id')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  async removeStage(@CurrentUser() user: Actor, @Param('id') id: string) {
    await this.stagesService.remove(user.organizationId, id);
    return { ok: true };
  }

  @Get('priorities')
  listPriorities(@CurrentUser() user: Actor) {
    return this.typesService.listPriorities(user.organizationId);
  }

  @Put('priorities')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  updatePriorities(@CurrentUser() user: Actor, @Body() dto: UpdateActivityPrioritiesDto) {
    return this.typesService.updatePriorities(user.organizationId, dto.items);
  }

  @Get('types')
  listTypes(@CurrentUser() user: Actor) {
    return this.typesService.list(user.organizationId);
  }

  @Post('types')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  createType(@CurrentUser() user: Actor, @Body() dto: CreateActivityTypeDto) {
    return this.typesService.create(user.organizationId, dto);
  }

  @Patch('types/reorder')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  reorderTypes(@CurrentUser() user: Actor, @Body() dto: ReorderActivityTypesDto) {
    return this.typesService.reorder(user.organizationId, dto.typeIds);
  }

  @Patch('types/:id')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  updateType(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Body() dto: UpdateActivityTypeDto,
  ) {
    return this.typesService.update(user.organizationId, id, dto);
  }

  @Delete('types/:id')
  @UseGuards(RolesGuard)
  @Roles('owner', 'admin')
  async removeType(@CurrentUser() user: Actor, @Param('id') id: string) {
    await this.typesService.remove(user.organizationId, id);
    return { ok: true };
  }

  @Get('stage-counts')
  stageCounts(
    @CurrentUser() user: Actor,
    @Query() query: ListActivitiesQueryDto,
  ) {
    return this.activitiesService.stageCounts(
      user.organizationId,
      user,
      query.filter ?? 'all',
      query.q,
      query.desk,
      {
        type: query.type,
        typeDefId: query.typeDefId,
        status: query.status,
        assigneeId: query.assigneeId,
        title: query.title,
        customer: query.customer,
        due: query.due,
        priority: query.priority,
        boardId: query.boardId,
      },
    );
  }

  @Get()
  list(
    @CurrentUser() user: Actor,
    @Query() query: ListActivitiesQueryDto,
  ) {
    return this.activitiesService.list(
      user.organizationId,
      user,
      query.filter ?? 'today',
      query.q,
      query.page ?? 1,
      query.limit ?? 50,
      {
        personId: query.personId,
        companyId: query.companyId,
        dealId: query.dealId,
        leadId: query.leadId,
      },
      {
        from: query.from,
        to: query.to,
      },
      query.desk,
      {
        type: query.type,
        typeDefId: query.typeDefId,
        status: query.status,
        assigneeId: query.assigneeId,
        title: query.title,
        customer: query.customer,
        due: query.due,
        priority: query.priority,
        boardId: query.boardId,
      },
      query.stageId ? { stageId: query.stageId } : undefined,
    );
  }

  /** ترتیب همان لیست میز، برای فعالیت قبلی/بعدی در جزئیات */
  @Get('nav-ids')
  navIds(@CurrentUser() user: Actor, @Query() query: ListActivitiesQueryDto) {
    return this.activitiesService.orderedIds(
      user.organizationId,
      user,
      query.filter ?? 'today',
      query.q,
      {
        personId: query.personId,
        companyId: query.companyId,
        dealId: query.dealId,
        leadId: query.leadId,
      },
      {
        from: query.from,
        to: query.to,
      },
      query.desk,
      {
        type: query.type,
        typeDefId: query.typeDefId,
        status: query.status,
        assigneeId: query.assigneeId,
        title: query.title,
        customer: query.customer,
        due: query.due,
        priority: query.priority,
        boardId: query.boardId,
      },
      query.stageId ? { stageId: query.stageId } : undefined,
    );
  }

  @Get('export')
  async export(
    @CurrentUser() user: Actor,
    @Res({ passthrough: true }) res: Response,
  ) {
    const buffer = await this.excelService.export(user);
    res.set({
      'Content-Type':
        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
      'Content-Disposition': `attachment; filename="${brand.filePrefix}-activities.xlsx"`,
    });
    return new StreamableFile(buffer);
  }

  @Post('import/preview')
  @UseInterceptors(excelUpload)
  importPreview(@UploadedFile() file?: Express.Multer.File) {
    if (!file?.buffer?.length) {
      throw new BadRequestException('فایل ارسال نشده');
    }
    return this.excelService.preview(file);
  }

  @Post('import/prepare')
  @UseInterceptors(excelUpload)
  importPrepare(
    @CurrentUser() user: Actor,
    @UploadedFile() file?: Express.Multer.File,
    @Body('mapping') mapping?: string,
  ) {
    if (!file?.buffer?.length) {
      throw new BadRequestException('فایل ارسال نشده');
    }
    return this.excelService.prepare(user, file, mapping);
  }

  @Get('import/prepare/:sessionId')
  importPrepareStatus(
    @CurrentUser() user: Actor,
    @Param('sessionId') sessionId: string,
  ) {
    return this.excelService.prepareStatus(user, sessionId);
  }

  @Post('import/rows')
  importRows(
    @CurrentUser() user: Actor,
    @Body() dto: ImportActivityRowsDto,
  ) {
    return this.excelService.importRows(user, dto);
  }

  @Post('import')
  @UseInterceptors(excelUpload)
  import(
    @CurrentUser() user: Actor,
    @UploadedFile() file?: Express.Multer.File,
    @Body('mapping') mapping?: string,
    @Body('sessionId') sessionId?: string,
    @Body('offset') offset?: string,
    @Body('limit') limit?: string,
  ) {
    if (!file?.buffer?.length && !sessionId) {
      throw new BadRequestException('فایل ارسال نشده');
    }
    return this.excelService.import(user, file, mapping, {
      sessionId,
      offset,
      limit,
    });
  }

  @Get(':id')
  get(@CurrentUser() user: Actor, @Param('id') id: string) {
    return this.activitiesService.get(user.organizationId, id, user);
  }

  @Post(':id/images')
  @UseInterceptors(
    FileInterceptor('file', {
      storage: memoryStorage(),
      limits: { fileSize: 10 * 1024 * 1024 },
    }),
  )
  addImage(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @UploadedFile() file: Express.Multer.File,
  ) {
    return this.activitiesService.addImage(
      user.organizationId,
      user.userId,
      id,
      file,
      user,
    );
  }

  @Get(':id/images/:imageId')
  async downloadImage(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Param('imageId') imageId: string,
  ): Promise<StreamableFile> {
    const { stream, fileName, mimeType } = await this.activitiesService.openImage(
      user.organizationId,
      id,
      imageId,
      user,
    );
    const encoded = encodeURIComponent(fileName);
    return new StreamableFile(stream, {
      type: mimeType,
      disposition: `inline; filename="${fileName.replace(/"/g, '')}"; filename*=UTF-8''${encoded}`,
    });
  }

  @Delete(':id/images/:imageId')
  async removeImage(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Param('imageId') imageId: string,
  ) {
    await this.activitiesService.removeImage(user.organizationId, id, imageId, user);
    return { ok: true };
  }

  @Post(':id/promote-from-prior')
  promoteFromPrior(@CurrentUser() user: Actor, @Param('id') id: string) {
    return this.activitiesService.promoteFromPrior(user, id);
  }

  @Post()
  create(@CurrentUser() user: Actor, @Body() dto: CreateActivityDto) {
    return this.activitiesService.create(
      user.organizationId,
      user.userId,
      dto,
      user,
    );
  }

  @Patch(':id')
  update(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Body() dto: UpdateActivityDto,
  ) {
    return this.activitiesService.update(user.organizationId, id, user, dto);
  }

  @Patch(':id/stage')
  moveStage(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Body() dto: MoveActivityStageDto,
  ) {
    return this.activitiesService.moveToStage(
      user.organizationId,
      id,
      user,
      dto.stageId,
      dto.position,
    );
  }

  @Patch(':id/complete')
  complete(
    @CurrentUser() user: Actor,
    @Param('id') id: string,
    @Query('force') force?: string,
    @Query('undo') undo?: string,
  ) {
    return this.activitiesService.complete(user.organizationId, id, user, {
      force: force === '1' || force === 'true',
      undo: undo === '1' || undo === 'true',
    });
  }

  @Delete(':id')
  async remove(@CurrentUser() user: Actor, @Param('id') id: string) {
    await this.activitiesService.remove(user.organizationId, id, user);
    return { ok: true };
  }
}