import { Body, Controller, Delete, Get, Param, Post, Put, Res } from '@nestjs/common';
import { QuestionService } from './question.service';
import { Response } from 'express';
import { GenericResponse } from '../common/GenericResponse.model';
import Question from './question.entity';
import { ApiTags, ApiOperation, ApiResponse, ApiParam, ApiBody } from '@nestjs/swagger';

@ApiTags('question')
@Controller('question')
export class QuestionController {
    constructor(private questionService: QuestionService) {}

    @Get("/all")
    @ApiOperation({ summary: 'Get all questions' })
    @ApiResponse({
        status: 200,
        description: 'Successfully retrieved all questions',
    })
    @ApiResponse({
        status: 404,
        description: 'No questions found',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "Questions not found"
            },
            "data": null
        }
    })
    async getAllQuestions(@Res() res: Response) {
        const response = await this.questionService.findAll() || [];
        if (!response) {
            const httpResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'Questions not found'
            }, null);
            res.status(404).send(httpResponse);
            return;
        }
        const httpResponse = new GenericResponse(null, response);
        res.status(200).send(httpResponse);
    }

    @Get(':id')
    @ApiOperation({ summary: 'Get a question by ID' })
    @ApiParam({ name: 'id', type: Number, description: 'ID of the question' })
    @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: 'Question not found',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "Question not found"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 200,
        description: 'Successfully retrieved question',
    })
    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.questionService.findByPk(id) || {};
        if (!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Question 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 questions based on criteria' })
    @ApiBody({ type: Question, description: 'Criteria to filter questions' })
    @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 questions found matching the filter criteria',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "No questions found based on the filter criteria"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 200,
        description: 'Successfully filtered questions',
    })
    async filter(@Body() question: Question, @Res() res: Response) {
        if (!question) {
            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.questionService.filter(question) || [];
        if (!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'No questions found matching the filter criteria'
            }, null);
            return res.status(404).send(errorResponse);
        }

        const httpResponse = new GenericResponse(null, response);
        res.status(200).send(httpResponse);
    }

    @Post()
    @ApiOperation({ summary: 'Create a new question' })
    @ApiBody({ type: Question, description: 'Question data to create' })
    @ApiResponse({
        status: 400,
        description: 'Invalid question data',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.INVALID_DATA",
                "stackTrace": "Request"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 201,
        description: 'Successfully created question',
    })
    async insert(@Body() question: Question, @Res() res: Response) {
        if (!question) {
            const response = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.INVALID_DATA',
                stackTrace: 'Request'
            }, null);
            return res.status(400).send(response);
        }

        delete question.id;
        const response = await this.questionService.upsert(question, true);
        const httpResponse = new GenericResponse(null, response);
        res.status(201).send(httpResponse);
    }

    @Put()
    @ApiOperation({ summary: 'Update an existing question' })
    @ApiBody({ type: Question, description: 'Question data to update' })
    @ApiResponse({
        status: 400,
        description: 'Invalid data or missing ID',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.INVALID_DATA",
                "stackTrace": "Request"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 404,
        description: 'Question not found',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "Question not found"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 200,
        description: 'Successfully updated question',
    })
    async update(@Body() question: Question, @Res() res: Response) {
        if (!question || !question.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.questionService.upsert(question, false);
        if (!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Question with ID ${question.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 question by ID' })
    @ApiParam({ name: 'id', type: Number, description: 'ID of the question to delete' })
    @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: 'Question not found',
        example: {
            "notification": {
                "exception": true,
                "exceptionSeverity": "HIGH",
                "exceptionMessage": "ERR.NOT_FOUND",
                "stackTrace": "Question not found"
            },
            "data": null
        }
    })
    @ApiResponse({
        status: 200,
        description: 'Successfully deleted question',
    })
    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.questionService.remove(id) || {};
        if (!response) {
            const errorResponse = new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Question with ID ${id} not found`
            }, null);
            return res.status(404).send(errorResponse);
        }

        const httpResponse = new GenericResponse(null, response);
        res.status(200).send(httpResponse);
    }
}