import { CurrentUser } from "@edr/api-common";
import { SupportAuthorRole } from "@edr/types";
import { Body, Controller, Get, Post } from "@nestjs/common";
import { ApiOperation, ApiTags } from "@nestjs/swagger";

import {
  AuthUserPayload,
  resolveAuthUserId,
} from "../../common/resolve-auth-user-id";
import { SendMessageDto } from "./dto/send-message.dto";
import { SupportChatService } from "./support-chat.service";

/**
 * Portal (customer) support-chat endpoints. The caller's company has exactly one
 * thread, so these are addressed as a singleton — no conversation id on the wire,
 * and nothing for a portal user to pick between.
 */
@ApiTags("support-chat")
@Controller("support")
export class SupportChatController {
  constructor(private readonly service: SupportChatService) {}

  @Get("conversation")
  @ApiOperation({
    summary: "My company's support thread (null until someone speaks)",
  })
  conversation(@CurrentUser() user: AuthUserPayload) {
    return this.service.getCustomerConversation(resolveAuthUserId(user));
  }

  @Get("conversation/messages")
  @ApiOperation({ summary: "Messages in my company's support thread" })
  messages(@CurrentUser() user: AuthUserPayload) {
    return this.service.getCustomerMessages(resolveAuthUserId(user));
  }

  @Post("conversation/messages")
  @ApiOperation({
    summary: "Send a message as the customer, opening the thread if needed",
  })
  send(@CurrentUser() user: AuthUserPayload, @Body() body: SendMessageDto) {
    return this.service.sendAsCustomer(resolveAuthUserId(user), body.body);
  }

  @Post("conversation/read")
  @ApiOperation({ summary: "Mark my company's thread read (customer side)" })
  read(@CurrentUser() user: AuthUserPayload) {
    return this.service.markCustomerRead(resolveAuthUserId(user));
  }

  @Get("unread-count")
  @ApiOperation({ summary: "Count my unread support messages" })
  unread(@CurrentUser() user: AuthUserPayload) {
    return this.service.unreadCount(
      SupportAuthorRole.CUSTOMER,
      resolveAuthUserId(user),
    );
  }
}