import { Body, Controller, Get, Post, Query } from "@nestjs/common";
import { ApiOperation, ApiResponse } from "@nestjs/swagger";

import { EmailSpamService } from "./services/email-spam.service";
import { AdminRoute } from "../../common/decorators/admin.decorator";

@Controller("email-blocking")
export class EmailBlockingController {
  constructor(private readonly emailSpamService: EmailSpamService) {}

  @Get("diagnose")
  @AdminRoute()
  @ApiOperation({
    summary: "Diagnose email blocking issues (Admin only)",
    description: "Check if a sender domain is blocked for a recipient and optionally unblock it",
  })
  @ApiResponse({ status: 200, description: "Diagnostic information" })
  @ApiResponse({ status: 400, description: "Invalid parameters" })
  @ApiResponse({ status: 403, description: "Not authorized (Admin only)" })
  async diagnoseEmailBlocking(
    @Query("recipient") recipientEmail: string,
    @Query("senderDomain") senderDomain: string,
    @Query("unblock") unblock?: string,
  ) {
    if (!recipientEmail || !senderDomain) {
      throw new Error("Both recipient and senderDomain query parameters are required");
    }
    const shouldUnblock = unblock === "true" || unblock === "1";
    return this.emailSpamService.diagnoseEmailBlocking(recipientEmail, senderDomain, shouldUnblock);
  }

  @Post("allowlist")
  @AdminRoute()
  @ApiOperation({
    summary: "Add domain to allowlist (Admin only)",
    description: "Add a sender domain to the allowlist for a recipient's business",
  })
  @ApiResponse({ status: 200, description: "Domain added to allowlist" })
  @ApiResponse({ status: 400, description: "Invalid parameters" })
  @ApiResponse({ status: 403, description: "Not authorized (Admin only)" })
  async addToAllowlist(
    @Body() body: { recipientEmail: string; senderDomain: string; description?: string },
  ) {
    if (!body.recipientEmail || !body.senderDomain) {
      throw new Error("Both recipientEmail and senderDomain are required");
    }
    return this.emailSpamService.addDomainToAllowlistForUser(
      body.recipientEmail,
      body.senderDomain,
      body.description,
    );
  }
}