import {
  Controller,
  Get,
  Post,
  Put,
  Delete,
  Body,
  Param,
  Query,
  HttpCode,
  HttpStatus,
} from '@nestjs/common'

import { EntityType } from '../entities/attribute-definition.entity'
import { AttributeValueService } from '../services/attribute-value.service'

interface SetAttributesDto {
  attributes: Record<string, any>
}

interface SetAttributeDto {
  value: any
}

@Controller('attribute-values')
export class AttributeValueController {
  constructor(
    private readonly attributeValueService: AttributeValueService,
  ) {}

  /**
   * Get all attribute values for a specific entity
   * GET /api/attribute-values?entityType=USER&entityId=uuid
   * Returns: { "age_range": "25-34", "gender_identity": "female", ... }
   */
  @Get()
  async getAttributes(
    @Query('entityType') entityType: EntityType,
    @Query('entityId') entityId: string,
  ): Promise<Record<string, any>> {
    return this.attributeValueService.getAttributes(entityType, entityId)
  }

  /**
   * Set multiple attribute values at once (bulk upsert)
   * POST /api/attribute-values?entityType=USER&entityId=uuid
   * Body: { "attributes": { "age_range": "25-34", "gender_identity": "female" } }
   */
  @Post()
  @HttpCode(HttpStatus.OK)
  async setAttributes(
    @Query('entityType') entityType: EntityType,
    @Query('entityId') entityId: string,
    @Body() dto: SetAttributesDto,
  ): Promise<void> {
    return this.attributeValueService.setAttributes(entityType, entityId, dto.attributes)
  }

  /**
   * Set a single attribute value (upsert)
   * PUT /api/attribute-values/:code?entityType=USER&entityId=uuid
   * Body: { "value": "25-34" }
   */
  @Put(':code')
  async setAttribute(
    @Param('code') code: string,
    @Query('entityType') entityType: EntityType,
    @Query('entityId') entityId: string,
    @Body() dto: SetAttributeDto,
  ): Promise<void> {
    await this.attributeValueService.setAttribute(entityType, entityId, code, dto.value)
  }

  /**
   * Delete an attribute value
   * DELETE /api/attribute-values/:code?entityType=USER&entityId=uuid
   */
  @Delete(':code')
  @HttpCode(HttpStatus.NO_CONTENT)
  async deleteAttribute(
    @Param('code') code: string,
    @Query('entityType') entityType: EntityType,
    @Query('entityId') entityId: string,
  ): Promise<void> {
    return this.attributeValueService.deleteAttribute(entityType, entityId, code)
  }

  /**
   * Get a single attribute value
   * GET /api/attribute-values/:code?entityType=USER&entityId=uuid
   */
  @Get(':code')
  async getAttribute(
    @Param('code') code: string,
    @Query('entityType') entityType: EntityType,
    @Query('entityId') entityId: string,
  ): Promise<any> {
    return this.attributeValueService.getAttribute(entityType, entityId, code)
  }
}