import { Body, Controller, Get, Param, Patch, Post, Query, Req, UseGuards, UsePipes, ValidationPipe } from '@nestjs/common';
import { ApiBearerAuth, ApiBody, ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
import { AuthGuard } from 'src/auth/auth.guard';
import { RolesGuard } from 'src/guard/role.guard';
import { Roles } from 'src/guard/decorators/role.decorator';
import { CommonService } from 'src/common/common.service';
import { PANEL_ROLES, UserType } from 'src/user/schema/users.schema';
import { ProductService } from './product.service';
import { CalculatePremiumDto, CreateProductDto, ProductListDto, UpdateProductDto } from './dto/product.dto';

@ApiTags('Products')
@ApiBearerAuth('access_token')
@UseGuards(AuthGuard, RolesGuard)
@Roles(...PANEL_ROLES)
@UsePipes(new ValidationPipe({ transform: true, whitelist: true }))
@Controller('admin/products')
export class ProductController {
    constructor(
        private readonly productService: ProductService,
        private readonly common: CommonService
    ) { }

    @Post()
    @Roles(UserType.SUPER_ADMIN, UserType.ADMIN_STAFF)
    @ApiOperation({ summary: 'Define a product with its category, insurer, GST rate and agent commission rule' })
    @ApiBody({ type: CreateProductDto })
    @ApiResponse({ status: 400, description: 'Inactive or mismatched category/insurer, or product already exists' })
    create(@Req() req: any, @Body() dto: CreateProductDto) {
        return this.productService.create(dto, req.user_data, this.common.getUserLanguage(req));
    }

    @Get()
    @ApiOperation({ summary: 'List products (filter by category_id, insurer_id, is_active, search; assignee_id limits to what that agent may sell). Commission fields are hidden from Policy Staff.' })
    list(@Req() req: any, @Query() query: ProductListDto) {
        return this.productService.list(query, req.user_data, this.common.getUserLanguage(req));
    }

    @Get(':id')
    @ApiOperation({ summary: 'Get a product' })
    @ApiResponse({ status: 404, description: 'Product not found' })
    getById(@Req() req: any, @Param('id') id: string) {
        return this.productService.getById(id, req.user_data, this.common.getUserLanguage(req));
    }

    @Get(':id/calculate')
    @ApiOperation({ summary: 'Preview net premium (excl. GST), GST amount and agent commission for a gross premium' })
    calculate(@Req() req: any, @Param('id') id: string, @Query() query: CalculatePremiumDto) {
        return this.productService.calculate(id, query, req.user_data, this.common.getUserLanguage(req));
    }

    @Patch(':id')
    @Roles(UserType.SUPER_ADMIN, UserType.ADMIN_STAFF)
    @ApiOperation({ summary: 'Edit a product or activate/deactivate it. Only affects policies entered afterwards.' })
    @ApiBody({ type: UpdateProductDto })
    update(@Req() req: any, @Param('id') id: string, @Body() dto: UpdateProductDto) {
        return this.productService.update(id, dto, req.user_data, this.common.getUserLanguage(req));
    }
}