"use client";

import React, { useState } from "react";
import Link from "next/link";
import { Button } from "@/components/ui/button";
import CodeEditor from "@/components/cards/MonacoEditor";
import { EXAMPLE_A1 } from "@/constants";
import { useToast } from "@/components/ui/use-toast";

const EmailEditor = () => {
  const { toast } = useToast();
  const [subject, setSubject] = useState("");
  const [previewContent, setPreviewContent] = useState<string>(EXAMPLE_A1);
  const [loading, setLoading] = useState(false);

  const validateInputs = () => {
    if (!subject.trim() || !previewContent.trim()) {
      toast({
        title: "Validation Error",
        description: "Subject and content cannot be empty.",
        variant: "destructive"
      });
      return false;
    }
    return true;
  };

  const handleSendAll = async () => {
    if (!validateInputs()) return;

    setLoading(true);
    try {
      const response = await fetch("/api/newsletter/send", {
        method: "POST",
        headers: {
          "Content-Type": "application/json"
        },
        body: JSON.stringify({
          subject: subject,
          html: previewContent
        })
      });

      if (!response.ok) {
        throw new Error("Network response was not ok");
      }

      const result = await response.json();
      toast({
        title: "Success!",
        description: result.message || "Emails sent successfully"
      });
    } catch (error) {
      console.error("Error:", error);
      toast({
        title: "Uh oh!",
        description: `Failed to send emails: ${error}`,
        variant: "destructive"
      });
    } finally {
      setLoading(false);
    }
  };

  const handleSendTest = async () => {
    if (!validateInputs()) return;

    setLoading(true);
    try {
      const response = await fetch("/api/newsletter/test", {
        method: "POST",
        headers: {
          "Content-Type": "application/json"
        },
        body: JSON.stringify({
          subject: subject,
          html: previewContent
        })
      });

      if (!response.ok) {
        throw new Error("Network response was not ok");
      }

      const result = await response.json();
      toast({
        title: "Success!",
        description: result.message || "Test email sent successfully"
      });
    } catch (error) {
      console.error("Error:", error);
      toast({
        title: "Uh oh!",
        description: `Failed to send test email: ${error}`,
        variant: "destructive"
      });
    } finally {
      setLoading(false);
    }
  };

  const handleEditorChange = (value: string) => {
    setPreviewContent(value);
  };

  return (
    <div className="flex flex-col lg:flex-row h-screen">
      <div className="w-full lg:w-1/2 p-4 flex flex-col space-y-4">
        <Link href="/admin/email" className="text-blue-500 underline">
          Back
        </Link>
        <input
          type="text"
          placeholder="Subject"
          value={subject}
          onChange={(e) => setSubject(e.target.value)}
          className="border rounded-md p-2"
        />
        <CodeEditor onChange={handleEditorChange} />
        <div className="flex space-x-2 mt-4">
          <Button
            variant={"secondary"}
            onClick={handleSendTest}
            disabled={loading}
          >
            {loading ? "Sending..." : "Send Test"}
          </Button>
          <Button onClick={handleSendAll} disabled={loading}>
            {loading ? "Sending..." : "Send All"}
          </Button>
        </div>
      </div>

      <div className="w-full lg:w-1/2 p-4 overflow-auto">
        <h2 className="text-2xl font-bold mb-4 text-secondary-foreground">
          Email Preview
        </h2>
        <div
          className="border rounded-md p-4"
          dangerouslySetInnerHTML={{ __html: previewContent }}
        />
      </div>
    </div>
  );
};

export default EmailEditor;