import {
	Controller,
	Get,
	Post,
	Patch,
	Delete,
	Body,
	Param,
	Query,
	UseGuards,
	NotFoundException,
} from '@nestjs/common';
import { AuthGuard, CurrentUser } from '@mana-core/nestjs-integration';
import { LinksService, type CreateLinkDto, type UpdateLinkDto } from '../services/links.service';

@Controller('api/links')
@UseGuards(AuthGuard)
export class LinksController {
	constructor(private readonly linksService: LinksService) {}

	@Get()
	async getLinks(
		@CurrentUser() user: any,
		@Query('page') page: number = 1,
		@Query('limit') limit: number = 20,
		@Query('search') search?: string,
		@Query('isActive') isActive?: boolean
	) {
		const userId = user.sub;
		const { items, total } = await this.linksService.getLinks(userId, {
			page,
			limit,
			search,
			isActive,
		});

		return {
			success: true,
			data: {
				links: items.map((link) => ({
					...link,
					shortUrl: this.linksService.getShortUrl(link.shortCode),
					hasPassword: !!link.password,
					password: undefined, // Never send password to client
				})),
				pagination: {
					page,
					limit,
					total,
					totalPages: Math.ceil(total / limit),
					hasMore: page * limit < total,
				},
			},
		};
	}

	@Get(':id')
	async getLink(@CurrentUser() user: any, @Param('id') id: string) {
		const userId = user.sub;
		const link = await this.linksService.getLinkById(id, userId);

		if (!link) {
			throw new NotFoundException('Link not found');
		}

		return {
			success: true,
			data: {
				...link,
				shortUrl: this.linksService.getShortUrl(link.shortCode),
				hasPassword: !!link.password,
				password: undefined,
			},
		};
	}

	@Post()
	async createLink(@CurrentUser() user: any, @Body() dto: CreateLinkDto) {
		const userId = user.sub;
		const link = await this.linksService.createLink(userId, dto);

		return {
			success: true,
			data: {
				...link,
				shortUrl: this.linksService.getShortUrl(link.shortCode),
				hasPassword: !!link.password,
				password: undefined,
			},
		};
	}

	@Patch(':id')
	async updateLink(@CurrentUser() user: any, @Param('id') id: string, @Body() dto: UpdateLinkDto) {
		const userId = user.sub;
		const link = await this.linksService.updateLink(id, userId, dto);

		if (!link) {
			throw new NotFoundException('Link not found');
		}

		return {
			success: true,
			data: {
				...link,
				shortUrl: this.linksService.getShortUrl(link.shortCode),
				hasPassword: !!link.password,
				password: undefined,
			},
		};
	}

	@Delete(':id')
	async deleteLink(@CurrentUser() user: any, @Param('id') id: string) {
		const userId = user.sub;
		const deleted = await this.linksService.deleteLink(id, userId);

		if (!deleted) {
			throw new NotFoundException('Link not found');
		}

		return {
			success: true,
			message: 'Link deleted successfully',
		};
	}
}