"use client";

import {
  CheckCircle2,
  Circle,
  Crosshair,
  Download,
  FileInput,
  GitBranchPlus,
  Radio,
  Save,
  Square,
  Upload
} from "lucide-react";
import { Button } from "@/components/ui/Button";
import { PlaybackControls } from "@/components/tree-visualizer/PlaybackControls";
import type { TreeNodeViewMode } from "@/components/tree-visualizer/viewMode";
import { cn } from "@/lib/utils";

interface TreeCommandBarProps {
  hasTree: boolean;
  isDirty: boolean;
  isPlaying: boolean;
  isSaving: boolean;
  isValidating: boolean;
  nodeViewMode: TreeNodeViewMode;
  onCreate: () => void;
  onImport: () => void;
  onModelStream: () => void;
  onSave: () => void;
  onExportRaw: () => void;
  onValidate: () => void;
  onReplay: () => void;
  onPause: () => void;
  onStep: () => void;
  onFitView: () => void;
  onNodeViewModeChange: (mode: TreeNodeViewMode) => void;
}

export function TreeCommandBar({
  hasTree,
  isDirty,
  isPlaying,
  isSaving,
  isValidating,
  nodeViewMode,
  onCreate,
  onImport,
  onModelStream,
  onSave,
  onExportRaw,
  onValidate,
  onReplay,
  onPause,
  onStep,
  onFitView,
  onNodeViewModeChange
}: TreeCommandBarProps) {
  const modeOptions = [
    { mode: "full" as const, label: "Full", icon: Square },
    { mode: "atom" as const, label: "Atom", icon: Circle }
  ];

  return (
    <header className="absolute left-4 right-4 top-4 z-20 flex min-h-14 items-center justify-between gap-3 rounded-xl border border-paper-300 bg-white/82 px-3 py-2 shadow-panel backdrop-blur-xl">
      <div className="flex min-w-0 items-center gap-2 overflow-x-auto scrollbar-thin">
        <Button variant="primary" onClick={onCreate} title="Create a new tree from pasted trajectory text">
          <GitBranchPlus className="h-4 w-4" />
          Create Tree
        </Button>
        <Button onClick={onImport} title="Import raw trajectory text">
          <Upload className="h-4 w-4" />
          Import
        </Button>
        <Button onClick={onModelStream} title="Create a new tree by streaming model trajectory nodes">
          <Radio className="h-4 w-4" />
          Create tree by model
        </Button>
        <Button onClick={onSave} disabled={!hasTree || isSaving || !isDirty} title="Save current tree edits">
          <Save className="h-4 w-4" />
          {isSaving ? "Saving" : "Save"}
        </Button>
        <Button
          className="min-w-[138px]"
          onClick={onExportRaw}
          disabled={!hasTree}
          title="Export the full original pasted trajectory message"
        >
          <Download className="h-4 w-4" />
          Export Raw
        </Button>
        <Button onClick={onValidate} disabled={!hasTree || isValidating} title="Validate current tree">
          <CheckCircle2 className="h-4 w-4" />
          {isValidating ? "Validating" : "Validate"}
        </Button>
      </div>
      <div className="flex shrink-0 items-center gap-2">
        <div
          role="radiogroup"
          aria-label="Node view mode"
          className="inline-flex h-9 items-center rounded-lg border border-paper-300 bg-paper-50 p-1 shadow-sm"
        >
          {modeOptions.map(({ mode, label, icon: Icon }) => {
            const active = nodeViewMode === mode;
            return (
              <button
                key={mode}
                type="button"
                role="radio"
                aria-checked={active}
                onClick={() => onNodeViewModeChange(mode)}
                title={`${label} node view`}
                className={cn(
                  "inline-flex h-7 min-w-8 items-center justify-center gap-1.5 rounded-md px-2 text-xs font-semibold transition md:min-w-[68px]",
                  active ? "bg-white text-claude-700 shadow-sm" : "text-ink-500 hover:text-ink-900"
                )}
              >
                <Icon className="h-3.5 w-3.5 shrink-0" />
                <span className="hidden md:inline">{label}</span>
              </button>
            );
          })}
        </div>
        <PlaybackControls
          isPlaying={isPlaying}
          disabled={!hasTree}
          onReplay={onReplay}
          onPause={onPause}
          onStep={onStep}
        />
        <Button onClick={onFitView} disabled={!hasTree} title="Fit the tree into view">
          <Crosshair className="h-4 w-4" />
          Fit View
        </Button>
        <div className="hidden items-center gap-2 rounded-lg border border-paper-300 bg-paper-50 px-3 py-2 text-xs text-ink-500 lg:flex">
          <FileInput className="h-4 w-4 text-claude-500" />
          {isDirty ? "unsaved edits" : "workspace synced"}
        </div>
      </div>
    </header>
  );
}