"use client";

// Diff modal for the mission Refine flow. Shows the original
// description (raw) side-by-side with the LLM-refined version
// (rendered as Markdown). Accept / Cancel / Restore-original.

import { MarkdownBlock } from "./MarkdownBlock";

const mono =
  "ui-monospace, SFMono-Regular, SF Mono, Menlo, Monaco, Consolas, monospace";

export function RefineDiffModal({
  original,
  refined,
  busy,
  onAccept,
  onCancel,
  onUndoAfterAccept,
}: {
  original: string;
  refined: string;
  busy: boolean;
  onAccept: () => void;
  onCancel: () => void;
  onUndoAfterAccept: () => void;
}) {
  return (
    <div
      role="dialog"
      aria-modal
      onClick={onCancel}
      style={{
        position: "fixed",
        inset: 0,
        background: "rgba(0,0,0,.6)",
        display: "flex",
        alignItems: "center",
        justifyContent: "center",
        zIndex: 900,
        padding: 24,
      }}
    >
      <div
        onClick={(e) => e.stopPropagation()}
        style={{
          width: "min(1100px, 100%)",
          height: "min(720px, calc(100vh - 48px))",
          background: "#141419",
          borderRadius: 12,
          border: "1px solid rgba(255,255,255,.08)",
          display: "flex",
          flexDirection: "column",
        }}
      >
        <div
          style={{
            padding: "12px 18px",
            borderBottom: "1px solid rgba(255,255,255,.06)",
            display: "flex",
            alignItems: "center",
            gap: 10,
          }}
        >
          <span
            style={{
              fontFamily: mono,
              fontSize: 10.5,
              letterSpacing: ".14em",
              color: "#ffb44a",
              textTransform: "uppercase",
            }}
          >
            Refine — review before/after
          </span>
          <span style={{ flex: 1 }} />
          <button
            type="button"
            onClick={onUndoAfterAccept}
            disabled={busy}
            title="Restore the original description (drops the refinement)"
            style={{
              padding: "5px 12px",
              borderRadius: 8,
              border: "1px solid rgba(255,255,255,.1)",
              background: "transparent",
              color: "#a0a0a8",
              fontSize: 12,
              cursor: "pointer",
              opacity: busy ? 0.5 : 1,
            }}
          >
            Restore original
          </button>
          <button
            type="button"
            onClick={onCancel}
            disabled={busy}
            style={{
              padding: "5px 12px",
              borderRadius: 8,
              border: "1px solid rgba(255,255,255,.1)",
              background: "transparent",
              color: "#a0a0a8",
              fontSize: 12,
              cursor: "pointer",
              opacity: busy ? 0.5 : 1,
            }}
          >
            Cancel
          </button>
          <button
            type="button"
            onClick={onAccept}
            disabled={busy}
            style={{
              padding: "5px 14px",
              borderRadius: 8,
              border: "1px solid rgba(127,208,160,.5)",
              background: "rgba(127,208,160,.12)",
              color: "#7fd0a0",
              fontSize: 12,
              cursor: "pointer",
              opacity: busy ? 0.5 : 1,
            }}
          >
            {busy ? "Applying…" : "Accept"}
          </button>
        </div>
        <div
          style={{
            flex: 1,
            minHeight: 0,
            display: "grid",
            gridTemplateColumns: "1fr 1fr",
            gap: 1,
            background: "rgba(255,255,255,.06)",
          }}
        >
          <DiffPane
            title="Before"
            color="#8a8a92"
            body={original}
            renderAsMarkdown={false}
          />
          <DiffPane
            title="After"
            color="#7fd0a0"
            body={refined}
            renderAsMarkdown
          />
        </div>
      </div>
    </div>
  );
}

function DiffPane({
  title,
  color,
  body,
  renderAsMarkdown,
}: {
  title: string;
  color: string;
  body: string;
  renderAsMarkdown: boolean;
}) {
  return (
    <div
      style={{
        background: "#0e0e12",
        display: "flex",
        flexDirection: "column",
        minHeight: 0,
      }}
    >
      <div
        style={{
          padding: "8px 14px",
          borderBottom: "1px solid rgba(255,255,255,.05)",
          fontFamily: mono,
          fontSize: 10,
          letterSpacing: ".14em",
          color,
          textTransform: "uppercase",
        }}
      >
        {title}
      </div>
      <div style={{ flex: 1, minHeight: 0, overflow: "auto", padding: 14 }}>
        {renderAsMarkdown ? (
          <MarkdownBlock source={body} />
        ) : (
          <pre
            style={{
              margin: 0,
              whiteSpace: "pre-wrap",
              wordBreak: "break-word",
              fontFamily: mono,
              fontSize: 12,
              color: "#cfcfd5",
              lineHeight: 1.55,
            }}
          >
            {body}
          </pre>
        )}
      </div>
    </div>
  );
}