import { Body, Controller, Delete, Get, Param, Post, Put, Res, UsePipes, ValidationPipe } from '@nestjs/common';
import { EventCategoryService } from './event-category.service';
import { Response } from 'express';
import { GenericResponse } from '../common/GenericResponse.model';
import EventCategory from './event-category.entity';
import { ApiTags, ApiOperation, ApiResponse, ApiParam, ApiBody } from '@nestjs/swagger';
import { EventCategoryDTO, EventCategoryUpdateDTO } from './event-category.dto';

@ApiTags('eventCategory')
@Controller('eventCategory')
export class EventCategoryController {
    constructor(private eventCategoryService: EventCategoryService) {}

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

    @Get(':id')
    @ApiOperation({ summary: 'Get event category by ID' })
    @ApiParam({ name: 'id', type: Number, description: 'EventCategory ID' })
    @ApiResponse({
        status: 200,
        description: 'Successfully retrieved event category by 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: 'Event category not found',
        example: {
            notification: {
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'Event category not found'
            },
            data: null
        }
    })
    async findById(@Param('id') id: number, @Res() res: Response) {
        if (!id) {
            return res.status(400).send(new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NO_ID_REQ',
                stackTrace: 'Request'
            }, null));
        }

        const response = await this.eventCategoryService.findByPk(id);
        if (!response) {
            return res.status(404).send(new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Event category with ID ${id} not found`
            }, null));
        }

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

    @Post('/filter')
    @ApiOperation({ summary: 'Filter event categories based on criteria' })
    @ApiBody({ type: EventCategory, description: 'Filter criteria for event categories' })
    @ApiResponse({ status: 200, description: 'Successfully filtered event categories' })
    @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 event categories found based on filter criteria',
        example: {
            notification: {
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'No event categories found based on the filter criteria'
            },
            data: null
        }
    })
    async filter(@Body() category: EventCategory, @Res() res: Response) {
        if (!category) {
            return res.status(400).send(new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.INVALID_CRITERIA',
                stackTrace: 'Request'
            }, null));
        }

        const response = await this.eventCategoryService.filter(category);
        if (!response) {
            return res.status(404).send(new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'No event categories found based on the filter criteria'
            }, null));
        }

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

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

    @Put()
    @ApiOperation({ summary: 'Update an existing event category' })
    @ApiBody({ type: EventCategoryUpdateDTO, description: 'Event category data to update' })
    @ApiResponse({ status: 200, description: 'Successfully updated event category' })
    @ApiResponse({
        status: 400,
        description: 'Invalid data or ID missing',
        example: {
            notification: {
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NO_ID_REQ',
                stackTrace: 'Request'
            },
            data: null
        }
    })
    @ApiResponse({
        status: 404,
        description: 'Event category not found',
        example: {
            notification: {
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'Event category not found'
            },
            data: null
        }
    })
    @UsePipes(new ValidationPipe({ whitelist: true, skipMissingProperties: true }))
    async update(@Body() category: EventCategoryUpdateDTO, @Res() res: Response) {
        if (!category || !category.id) {
            return res.status(400).send(new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NO_ID_REQ',
                stackTrace: 'Request'
            }, null));
        }

        const response = await this.eventCategoryService.upsert(category, false);
        if (!response) {
            return res.status(404).send(new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Event category with ID ${category.id} not found`
            }, null));
        }

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

    @Delete(':id')
    @ApiOperation({ summary: 'Delete an event category by ID' })
    @ApiParam({ name: 'id', type: Number, description: 'Event category ID to delete' })
    @ApiResponse({ status: 200, description: 'Successfully deleted event category' })
    @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: 'Event category not found',
        example: {
            notification: {
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: 'Event category not found'
            },
            data: null
        }
    })
    async deleteById(@Param('id') id: number, @Res() res: Response) {
        if (!id) {
            return res.status(400).send(new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NO_ID_REQ',
                stackTrace: 'Request'
            }, null));
        }

        const response = await this.eventCategoryService.remove(id);
        if (!response) {
            return res.status(404).send(new GenericResponse({
                exception: true,
                exceptionSeverity: 'HIGH',
                exceptionMessage: 'ERR.NOT_FOUND',
                stackTrace: `Event category with ID ${id} not found`
            }, null));
        }

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