import { Body, Controller, Delete, Get, Param, Post, Put, Res, UsePipes, ValidationPipe } from '@nestjs/common';
import { RefundService } from './refund.service';
import { Response } from 'express';
import { GenericResponse } from '../common/GenericResponse.model';
import Refund from './refund.entity';
import { ApiTags, ApiOperation, ApiResponse, ApiParam, ApiBody } from '@nestjs/swagger';
import { RefundDTO, RefundUpdateDTO } from './refund.dto';

@ApiTags('refund')
@Controller('refund')
export class RefundController {
    constructor(private refundService: RefundService) {}

    @Get("/all")
    @ApiOperation({ summary: 'Get all refunds' })
    @ApiResponse({
        status: 200,
        description: 'Successfully retrieved all refunds',
    })
    @ApiResponse({
        status: 404,
        description: 'No refunds found',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "No refunds found"
            },
            "data": null
        }
    })
    async getAllRefunds(@Res() res: Response) {
        const response = await this.refundService.findAll() || [];
        if(!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'No refunds found'
            }, null);
            return res.status(404).send(errorResponse);
        }
        const httpResponse = new GenericResponse(null, response);
        res.send(httpResponse);
    }

    @Get(':id')
    @ApiOperation({ summary: 'Get refund by ID' })
    @ApiParam({ name: 'id', type: Number, description: 'Refund ID' })
    @ApiResponse({
        status: 400,
        description: 'ID is required',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NO_ID_REQ",
                "stackTrace": "Request"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 404,
        description: 'Refund not found',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "Refund not found"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 200,
        description: 'Successfully retrieved refund by ID',
    })
    async findById(@Param('id') id: number, @Res() res: Response) {
        if (!id) {
            const response = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NO_ID_REQ',
                stackTrace: 'Request'
            }, null);
            return res.status(400).send(response);
        }
        const response = await this.refundService.findByPk(id) || {};
        if (!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Refund with ID ${id} not found`
            }, null);
            return res.status(404).send(errorResponse);
        }
        const httpResponse = new GenericResponse(null, response);
        res.status(200).send(httpResponse);
    }

    @Post('/filter')
    @ApiOperation({ summary: 'Filter refunds based on criteria' })
    @ApiBody({ type: Refund, description: 'Filter criteria for refunds' })
    @ApiResponse({
        status: 400,
        description: 'Invalid filter criteria',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.INVALID_CRITERIA",
                "stackTrace": "Request"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 404,
        description: 'No refunds found based on filter criteria',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "No refunds found based on the filter criteria"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 200,
        description: 'Successfully filtered refunds',
    })
    async filter(@Body() refund: Refund, @Res() res: Response) {
        if (!refund) {
            const response = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.INVALID_CRITERIA',
                stackTrace: 'Request'
            }, null);
            return res.status(400).send(response);
        }
        const response = await this.refundService.filter(refund) || [];
        if (!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'No refunds found based on the filter criteria'
            }, null);
            return res.status(404).send(errorResponse);
        }
        const httpResponse = new GenericResponse(null, response);
        res.status(200).send(httpResponse);
    }

    @Post()
    @ApiOperation({ summary: 'Insert a new refund' })
    @ApiBody({ type: RefundDTO, description: 'Refund data to insert' })
    @ApiResponse({
        status: 400,
        description: 'Invalid refund data',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.INVALID_DATA",
                "stackTrace": "Request"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 201,
        description: 'Successfully created a refund',
    })
    @UsePipes(new ValidationPipe({ whitelist: true}))
    async insert(@Body() refund: RefundDTO, @Res() res: Response) {
        if (!refund) {
            const response = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.INVALID_DATA',
                stackTrace: 'Request'
            }, null);
            return res.status(400).send(response);
        }
        const response = await this.refundService.upsert(refund, true);
        const httpResponse = new GenericResponse(null, response);
        res.status(201).send(httpResponse);
    }

    @Put()
    @ApiOperation({ summary: 'Update an existing refund' })
    @ApiBody({ type: RefundUpdateDTO, description: 'Refund data to update' })
    @ApiResponse({
        status: 400,
        description: 'Invalid refund data or ID missing',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.INVALID_DATA",
                "stackTrace": "Request"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 404,
        description: 'Refund not found',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "Refund not found"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 200,
        description: 'Successfully updated refund',
    })
    @UsePipes(new ValidationPipe({ whitelist: true, skipMissingProperties: true }))
    async update(@Body() refund: RefundUpdateDTO, @Res() res: Response) {
        if (!refund || !refund.id) {
            const response = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NO_ID_REQ',
                stackTrace: 'Request'
            }, null);
            return res.status(400).send(response);
        }
        const response = await this.refundService.upsert(refund, false);
        if (!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Refund with ID ${refund.id} not found`
            }, null);
            return res.status(404).send(errorResponse);
        }
        const httpResponse = new GenericResponse(null, response);
        res.status(200).send(httpResponse);
    }

    @Delete(':id')
    @ApiOperation({ summary: 'Delete a refund by ID' })
    @ApiParam({ name: 'id', type: Number, description: 'Refund ID to delete' })
    @ApiResponse({
        status: 400,
        description: 'ID parameter is required',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NO_ID_REQ",
                "stackTrace": "Request"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 404,
        description: 'Refund not found',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "Refund not found"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 200,
        description: 'Successfully deleted refund',
    })
    async deleteById(@Param('id') id: number, @Res() res: Response) {
        if (!id) {
            const response = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NO_ID_REQ',
                stackTrace: 'Request'
            }, null);
            return res.status(400).send(response);
        }
        const response = await this.refundService.remove(id) || {};
        if (!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Refund with ID ${id} not found`
            }, null);
            return res.status(404).send(errorResponse);
        }
        const httpResponse = new GenericResponse(null, response);
        res.status(200).send(httpResponse);
    }
}