import {
    Controller,
    Post,
    Delete,
    Param,
    UseInterceptors,
    UploadedFile,
    Body,
    HttpCode,
    HttpStatus,
    UseGuards,
    ParseFilePipe,
    MaxFileSizeValidator,
    FileTypeValidator,
} from '@nestjs/common';
import { FileInterceptor } from '@nestjs/platform-express';
import {
    ApiTags,
    ApiOperation,
    ApiResponse,
    ApiConsumes,
    ApiBody,
    ApiBearerAuth,
    ApiParam,
} from '@nestjs/swagger';
import { StorageService } from './storage.service';
import { UploadFileDto } from './dto/upload-file.dto';
import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
import { RolesGuard } from '../auth/guards/roles.guard';
import { Roles } from '../auth/decorators/roles.decorator';
import type { FileUpload } from './interfaces/storage-provider.interface';

@ApiTags('storage')
@Controller('storage')
export class StorageController {
    constructor(private readonly storageService: StorageService) {}

    /**
     * 管理员上传文件（需要鉴权）
     * 用于上传券商Logo等基础数据
     */
    @Post('upload')
    @HttpCode(HttpStatus.OK)
    @UseGuards(JwtAuthGuard, RolesGuard)
    @Roles('admin', 'super_admin')
    @ApiBearerAuth()
    @UseInterceptors(FileInterceptor('file'))
    @ApiConsumes('multipart/form-data')
    @ApiOperation({
        summary: '管理员上传文件',
        description: '上传单个文件，需要管理员权限，用于上传券商Logo等基础数据',
    })
    @ApiBody({
        schema: {
            type: 'object',
            properties: {
                file: {
                    type: 'string',
                    format: 'binary',
                    description: '要上传的文件',
                },
                folder: {
                    type: 'string',
                    enum: ['broker', 'user', 'temp'],
                    description: '存储文件夹',
                },
                filename: {
                    type: 'string',
                    description: '自定义文件名',
                },
            },
        },
    })
    @ApiResponse({
        status: 200,
        description: '上传成功',
        schema: {
            type: 'object',
            properties: {
                path: {
                    type: 'string',
                    example: 'broker/1234567890-abcdef-broker-logo.jpg',
                },
                url: {
                    type: 'string',
                    example:
                        'http://localhost:3200/uploads/broker/1234567890-abcdef-broker-logo.jpg',
                },
                filename: {
                    type: 'string',
                    example: '1234567890-abcdef-broker-logo.jpg',
                },
                size: {
                    type: 'number',
                    example: 102400,
                },
                mimetype: {
                    type: 'string',
                    example: 'image/jpeg',
                },
            },
        },
    })
    @ApiResponse({ status: 400, description: '文件格式或大小不符合要求' })
    @ApiResponse({ status: 401, description: '未授权' })
    @ApiResponse({ status: 403, description: '权限不足' })
    async uploadAdmin(
        @UploadedFile(
            new ParseFilePipe({
                validators: [
                    new MaxFileSizeValidator({ maxSize: 5 * 1024 * 1024 }), // 5MB
                    new FileTypeValidator({
                        fileType: /^image\/(jpeg|jpg|png|gif|webp)$/,
                    }),
                ],
            }),
        )
        file: FileUpload,
        @Body() uploadDto: UploadFileDto,
    ) {
        const options = {
            folder: uploadDto.folder || 'temp',
            maxSize: 5 * 1024 * 1024, // 5MB
            allowedMimeTypes: [
                'image/jpeg',
                'image/jpg',
                'image/png',
                'image/gif',
                'image/webp',
            ],
            filename: uploadDto.filename,
        };

        return await this.storageService.upload(file, options);
    }

    /**
     * 用户上传头像（不需要鉴权）
     * 用于用户注册或更新头像
     */
    @Post('upload/avatar')
    @HttpCode(HttpStatus.OK)
    @UseInterceptors(FileInterceptor('file'))
    @ApiConsumes('multipart/form-data')
    @ApiOperation({
        summary: '上传用户头像',
        description: '上传用户头像，不需要鉴权，用于用户注册或更新头像',
    })
    @ApiBody({
        schema: {
            type: 'object',
            properties: {
                file: {
                    type: 'string',
                    format: 'binary',
                    description: '要上传的头像文件',
                },
            },
        },
    })
    @ApiResponse({
        status: 200,
        description: '上传成功',
        schema: {
            type: 'object',
            properties: {
                path: {
                    type: 'string',
                    example: 'user/1234567890-abcdef-avatar.jpg',
                },
                url: {
                    type: 'string',
                    example:
                        'http://localhost:3200/uploads/user/1234567890-abcdef-avatar.jpg',
                },
                filename: {
                    type: 'string',
                    example: '1234567890-abcdef-avatar.jpg',
                },
                size: {
                    type: 'number',
                    example: 102400,
                },
                mimetype: {
                    type: 'string',
                    example: 'image/jpeg',
                },
            },
        },
    })
    @ApiResponse({ status: 400, description: '文件格式或大小不符合要求' })
    async uploadAvatar(
        @UploadedFile(
            new ParseFilePipe({
                validators: [
                    new MaxFileSizeValidator({ maxSize: 2 * 1024 * 1024 }), // 2MB
                    new FileTypeValidator({
                        fileType: /^image\/(jpeg|jpg|png|gif|webp)$/,
                    }),
                ],
            }),
        )
        file: FileUpload,
    ) {
        const options = {
            folder: 'user', // 用户头像固定存储在 user 文件夹
            maxSize: 2 * 1024 * 1024, // 2MB（头像文件限制更小）
            allowedMimeTypes: [
                'image/jpeg',
                'image/jpg',
                'image/png',
                'image/gif',
                'image/webp',
            ],
        };

        return await this.storageService.upload(file, options);
    }

    /**
     * 删除文件（需要管理员权限）
     */
    @Delete(':path(*)')
    @HttpCode(HttpStatus.NO_CONTENT)
    @UseGuards(JwtAuthGuard, RolesGuard)
    @Roles('admin', 'super_admin')
    @ApiBearerAuth()
    @ApiOperation({
        summary: '删除文件',
        description: '根据文件路径删除文件，需要管理员权限',
    })
    @ApiParam({
        name: 'path',
        description: '文件路径（相对路径）',
        example: 'broker/1234567890-abcdef-broker-logo.jpg',
    })
    @ApiResponse({ status: 204, description: '删除成功' })
    @ApiResponse({ status: 404, description: '文件不存在' })
    @ApiResponse({ status: 401, description: '未授权' })
    @ApiResponse({ status: 403, description: '权限不足' })
    async delete(@Param('path') filePath: string) {
        await this.storageService.delete(filePath);
    }
}