import { Body, Controller, Delete, Get, HttpCode, Param, Patch, Post, Req } from '@nestjs/common';
import {
  AddMemberInput,
  ChangeMemberRoleInput,
  MemberView,
  PondMembersView,
  addMemberInputSchema,
  changeMemberRoleInputSchema,
} from '@dorfteich/shared';

import { AuthedRequest } from '../auth/auth.guard';
import { ZodValidationPipe } from '../common/zod-validation.pipe';
import { RequiresPondRole } from '../permissions/permission.decorators';
import { MembersService } from './members.service';

/**
 * Pond member management (issue #54). Listing is open to any member so the
 * membership is transparent (read-only for non-admins); adding, changing a
 * role, and removing are Pond-Admin-gated by the permission guard.
 */
@Controller('ponds/:pondId/members')
export class MembersController {
  constructor(private readonly members: MembersService) {}

  @Get()
  @RequiresPondRole('reader', { idParam: 'pondId' })
  async list(
    @Param('pondId') pondId: string,
    @Req() request: AuthedRequest,
  ): Promise<PondMembersView> {
    return this.members.list(request.user ?? null, pondId);
  }

  @Post()
  @RequiresPondRole('pond_admin', { idParam: 'pondId' })
  async add(
    @Param('pondId') pondId: string,
    @Body(new ZodValidationPipe(addMemberInputSchema)) input: AddMemberInput,
    @Req() request: AuthedRequest,
  ): Promise<MemberView> {
    return this.members.add(request.user!, pondId, input);
  }

  @Patch(':userId')
  @RequiresPondRole('pond_admin', { idParam: 'pondId' })
  async changeRole(
    @Param('pondId') pondId: string,
    @Param('userId') userId: string,
    @Body(new ZodValidationPipe(changeMemberRoleInputSchema)) input: ChangeMemberRoleInput,
    @Req() request: AuthedRequest,
  ): Promise<MemberView> {
    return this.members.changeRole(request.user!, pondId, userId, input);
  }

  @Delete(':userId')
  @HttpCode(204)
  @RequiresPondRole('pond_admin', { idParam: 'pondId' })
  async remove(
    @Param('pondId') pondId: string,
    @Param('userId') userId: string,
    @Req() request: AuthedRequest,
  ): Promise<void> {
    await this.members.remove(request.user!, pondId, userId);
  }
}