// components/generic/CMS/BlockList.jsx

import { BlockWrapper } from "./BlockWrapper";
import { TextBlock } from "./Blocks/Admin/TextBlock";
import { ImageBlock } from "./Blocks/Admin/ImageBlock";
import { TextImageBlock } from "./Blocks/Admin/TextImageBlock";
import { VideoBlock } from "./Blocks/Admin/VideoBlock";
import { TextVideoBlock } from "./Blocks/Admin/TextVideoBlock";
import { AudioBlock } from "./Blocks/Admin/AudioBlock";
import { CodeBlock } from "./Blocks/Admin/CodeBlock";
import { MarkdownBlock } from "./Blocks/Admin/MarkdownBlock";

// ─── Block renderer ───────────────────────────────────────────────────────────
//
// blockId is forwarded to TextBlock (and any future rich-text blocks) so the
// WYSIWYG editor knows exactly when to seed its innerHTML from saved data.

function BlockContent({ block, onUpdate }) {
  const { id, type, content } = block;

  switch (type) {
    case "text":
      return (
        <TextBlock
          blockId={id}
          content={content}
          onUpdate={onUpdate}
        />
      );
    case "image":
      return <ImageBlock content={content} onUpdate={onUpdate} />;
    case "text-image":
      return <TextImageBlock blockId={id} content={content} onUpdate={onUpdate} />;
    case "video":
      return <VideoBlock content={content} onUpdate={onUpdate} />;
    case "text-video":
      return <TextVideoBlock blockId={id} content={content} onUpdate={onUpdate} />;
    case "audio":
      return <AudioBlock content={content} onUpdate={onUpdate} />;
    case "code":
      return <CodeBlock content={content} onUpdate={onUpdate} />;
    case "markdown":
      return <MarkdownBlock content={content} onUpdate={onUpdate} />;
    default:
      return <p className="text-sm text-muted-foreground">Unknown block type.</p>;
  }
}

// ─── Default content per type ─────────────────────────────────────────────────

export const DEFAULT_CONTENT = {
  "text": { body: "" },
  "image": { asset_id: null, url: "", alt: "" },
  "text-image": { body: "", asset_id: null, url: "", alt: "", image_position: "right" },
  "video": { asset_id: null, url: "", thumbnail_url: "", duration_seconds: 0 },
  "text-video": { body: "", asset_id: null, url: "", thumbnail_url: "", video_position: "right", duration_seconds: 0 },
  "audio":      { asset_id: null, url: "", title: "", artist: "", tag: "", thumbnail: "", duration_seconds: 0 },
  "code":       { language: "javascript", code: "" },
  "markdown":   { body: "" },
};

// ─── List ─────────────────────────────────────────────────────────────────────

export function BlockList({ blocks, onUpdate, onMove, onDelete }) {
  if (!blocks.length) {
    return (
      <div className="flex flex-col items-center justify-center rounded-lg border-2 border-dashed border-muted-foreground/20 py-16 gap-2">
        <p className="text-sm text-muted-foreground">No blocks yet.</p>
        <p className="text-xs text-muted-foreground">
          Use the button below to add your first block.
        </p>
      </div>
    );
  }

  return (
    <div className="flex flex-col gap-3">
      {blocks.map((block, index) => (
        <BlockWrapper
          key={block.id}
          type={block.type}
          index={index}
          total={blocks.length}
          onMoveUp={() => onMove(block.id, "up")}
          onMoveDown={() => onMove(block.id, "down")}
          onDelete={() => onDelete(block.id)}
        >
          <BlockContent
            block={block}
            onUpdate={(updated) => onUpdate(block.id, updated)}
          />
        </BlockWrapper>
      ))}
    </div>
  );
}