"use client";

import { useState } from "react";
import { useMutation } from "convex/react";
import { api } from "@/convex/_generated/api";
import { Id } from "@/convex/_generated/dataModel";

interface RadioPromptSectionProps {
  prompt?: string;
  roomId: Id<"rooms">;
  isGenerating?: boolean;
}

export function RadioPromptSection({
  prompt,
  roomId,
  isGenerating = false,
}: RadioPromptSectionProps) {
  const [isEditing, setIsEditing] = useState(!prompt);
  const [editedPrompt, setEditedPrompt] = useState(prompt || "");
  const updatePrompt = useMutation(api.radioRooms.updateRadioPrompt);

  const handleSave = async () => {
    if (!editedPrompt.trim()) return;

    try {
      await updatePrompt({
        roomId,
        prompt: editedPrompt.trim(),
      });
      setIsEditing(false);
    } catch (error) {
      console.error("Failed to update radio prompt:", error);
    }
  };

  const handleCancel = () => {
    setEditedPrompt(prompt || "");
    setIsEditing(false);
  };

  // Empty state when no prompt is set
  if (!prompt && !isEditing) {
    return (
      <div data-radio-prompt-section className="p-8 border-b border-gray-200 dark:border-gray-700 bg-gradient-to-r from-purple-50 to-blue-50 dark:from-purple-900/20 dark:to-blue-900/20 text-center">
        <div className="max-w-2xl mx-auto">
          <h3 className="text-2xl font-bold mb-2 text-gray-900 dark:text-gray-100">
            Set your radio station&apos;s vibe
          </h3>
          <p className="text-gray-600 dark:text-gray-400 mb-6">
            Describe the type of music you want to hear, and we&apos;ll generate an endless stream of songs matching your prompt
          </p>
          <button
            onClick={() => setIsEditing(true)}
            className="px-6 py-3 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition-colors font-semibold"
          >
            Create Radio Prompt
          </button>
        </div>
      </div>
    );
  }

  // Editing mode
  if (isEditing) {
    return (
      <div data-radio-prompt-section className="p-6 border-b border-gray-200 dark:border-gray-700 bg-white dark:bg-gray-800">
        <div className="max-w-4xl mx-auto">
          <label className="block text-sm font-semibold text-gray-700 dark:text-gray-300 mb-2">
            Radio Station Prompt
          </label>
          <textarea
            value={editedPrompt}
            onChange={(e) => setEditedPrompt(e.target.value)}
            className="w-full p-3 border border-gray-300 dark:border-gray-600 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent resize-none bg-white dark:bg-gray-900 text-gray-900 dark:text-gray-100"
            rows={3}
            placeholder="e.g., groovy neosoul jazz, or upbeat indie rock with summer vibes"
            autoFocus
          />
          <div className="flex gap-2 mt-3">
            <button
              onClick={handleSave}
              disabled={!editedPrompt.trim()}
              className="px-4 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700 transition-colors disabled:opacity-50 disabled:cursor-not-allowed font-medium"
            >
              Save & Generate Songs
            </button>
            {prompt && (
              <button
                onClick={handleCancel}
                className="px-4 py-2 bg-gray-100 dark:bg-gray-700 text-gray-700 dark:text-gray-300 rounded-md hover:bg-gray-200 dark:hover:bg-gray-600 transition-colors font-medium"
              >
                Cancel
              </button>
            )}
          </div>
        </div>
      </div>
    );
  }

  // Display mode
  return (
    <div data-radio-prompt-section className="p-4 border-b border-gray-200 dark:border-gray-700 bg-gradient-to-r from-purple-50 to-blue-50 dark:from-purple-900/20 dark:to-blue-900/20">
      <div className="max-w-4xl mx-auto flex items-start justify-between gap-4">
        <div className="flex-1">
          <div className="flex items-center gap-2 mb-2">
            <div className="text-xs font-bold text-blue-600 dark:text-blue-400 uppercase tracking-wide">
              Radio Prompt
            </div>
            {isGenerating && (
              <div className="flex items-center gap-1 text-xs text-gray-600 dark:text-gray-400">
                <svg
                  className="animate-spin h-3 w-3"
                  xmlns="http://www.w3.org/2000/svg"
                  fill="none"
                  viewBox="0 0 24 24"
                >
                  <circle
                    className="opacity-25"
                    cx="12"
                    cy="12"
                    r="10"
                    stroke="currentColor"
                    strokeWidth="4"
                  ></circle>
                  <path
                    className="opacity-75"
                    fill="currentColor"
                    d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
                  ></path>
                </svg>
                <span>Generating new songs...</span>
              </div>
            )}
          </div>
          <div className="text-base text-gray-900 dark:text-gray-100 leading-relaxed">
            {prompt}
          </div>
        </div>
        <button
          onClick={() => setIsEditing(true)}
          className="px-3 py-1.5 text-sm text-blue-600 dark:text-blue-400 hover:bg-blue-100 dark:hover:bg-blue-900/30 rounded-md transition-colors font-medium"
        >
          Edit
        </button>
      </div>
    </div>
  );
}