import React, { useState } from "react";
import { 
  Menu, 
  Printer, 
  Save, 
  Type, 
  Settings, 
  X, 
  Layers,
  User
} from "lucide-react";
import { AuthUser } from "../../types";

interface HeaderProps {
  user: AuthUser;
  isSidebarOpen: boolean;
  setIsSidebarOpen: (open: boolean) => void;
  activeLayoutPreset: "default" | "writer" | "collab";
  editorFontFamily: "sans" | "serif" | "mono";
  setEditorFontFamily: (font: "sans" | "serif" | "mono") => void;
  autoSaveEnabled: boolean;
  setAutoSaveEnabled: (val: boolean) => void;
  handlePrintPdf: () => void;
  handleManualSave: () => void;
  resolvedTheme: "dark" | "light";
  themeMode: "system" | "dark" | "light";
  setThemeMode: (theme: "system" | "dark" | "light") => void;
  documentInputTheme: "modern" | "terminal" | "notebook" | "ivory" | "monokai" | "darcula" | "solarized-dark" | "solarized-light";
  setDocumentInputTheme: (theme: any) => void;
  documentExportTheme: "corporate" | "tech" | "academic" | "sunset" | "midnight";
  setDocumentExportTheme: (theme: any) => void;
  printIncludeCoverPage: boolean;
  setPrintIncludeCoverPage: (inc: boolean) => void;
  printIncludeQRCode: boolean;
  setPrintIncludeQRCode: (inc: boolean) => void;
  printWatermarkType: "none" | "confidential" | "draft" | "custom";
  setPrintWatermarkType: (type: any) => void;
  printWatermarkText: string;
  setPrintWatermarkText: (txt: string) => void;
  prefSyncStatus: "idle" | "syncing" | "synced" | "error";
  syncPreferencesToServer: () => void;
  handleApplyPreset: (preset: "default" | "writer" | "collab") => void;
  showFolderSidebar: boolean;
  setShowFolderSidebar: (show: boolean) => void;
  showAIPanel: boolean;
  setShowAIPanel: (show: boolean) => void;
  showLogs: boolean;
  setShowLogs: (show: boolean) => void;
  showPreview: boolean;
  setShowPreview: (show: boolean) => void;
  showAiTools: boolean;
  setShowAiTools: (show: boolean) => void;
  addLog: (text: string, type: "success" | "info" | "sync" | "error") => void;
}

export default function Header({
  user,
  isSidebarOpen,
  setIsSidebarOpen,
  activeLayoutPreset,
  editorFontFamily,
  setEditorFontFamily,
  autoSaveEnabled,
  setAutoSaveEnabled,
  handlePrintPdf,
  handleManualSave,
  resolvedTheme,
  themeMode,
  setThemeMode,
  documentInputTheme,
  setDocumentInputTheme,
  documentExportTheme,
  setDocumentExportTheme,
  printIncludeCoverPage,
  setPrintIncludeCoverPage,
  printIncludeQRCode,
  setPrintIncludeQRCode,
  printWatermarkType,
  setPrintWatermarkType,
  printWatermarkText,
  setPrintWatermarkText,
  prefSyncStatus,
  syncPreferencesToServer,
  handleApplyPreset,
  showFolderSidebar,
  setShowFolderSidebar,
  showAIPanel,
  setShowAIPanel,
  showLogs,
  setShowLogs,
  showPreview,
  setShowPreview,
  showAiTools,
  setShowAiTools,
  addLog
}: HeaderProps) {
  const [isPreferencesDropdownOpen, setIsPreferencesDropdownOpen] = useState(false);

  return (
    <header className="h-14 bg-[#1A1D23] border-b border-slate-800 sticky top-0 z-30 flex items-center flex-shrink-0">
      <div className="w-full px-4 sm:px-6 flex items-center justify-between h-full gap-3">
        
        {/* Logo, Sidebar Toggle Button & Workspace Title */}
        <div className="flex items-center space-x-3">
          <button
            onClick={() => setIsSidebarOpen(!isSidebarOpen)}
            className="p-1 px-2.5 bg-[#15181E] hover:bg-slate-800/80 text-slate-300 hover:text-white rounded-lg border border-slate-800 text-xs font-semibold select-none transition cursor-pointer font-sans flex items-center gap-1.5"
            title="Toggle Global Navigation Sidebar"
          >
            <Menu className="h-4 w-4 text-blue-500" />
            <span className="hidden sm:inline font-mono">Menu</span>
          </button>

          <div className="h-5 w-px bg-slate-800 hidden md:block"></div>

          <div className="flex items-center space-x-2">
            <div className="w-7 h-7 bg-blue-600 rounded-lg flex items-center justify-center">
              <svg className="w-4.5 h-4.5 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"></path>
              </svg>
            </div>
            <span className="font-bold text-white tracking-tight text-xs md:text-sm flex items-baseline gap-1">
              DOCUFLOW <span className="text-blue-550 text-[10px] font-mono font-bold">PRO</span>
            </span>
          </div>
          
          <div className="h-5 w-px bg-slate-800 hidden lg:block"></div>
          <span className="text-[10px] text-slate-500 font-mono tracking-wider uppercase hidden lg:inline">Workspace Hub</span>
        </div>

        {/* Minimal navbar right actions: Operator Preferences & Tier Status */}
        <div className="flex items-center space-x-3 relative">
          
          {/* Prominent Export as PDF Button */}
          <button
            onClick={handlePrintPdf}
            className="flex items-center gap-1.5 px-3 py-1.5 bg-gradient-to-r from-indigo-600 to-blue-600 hover:from-indigo-500 hover:to-blue-500 text-white rounded-lg text-xs font-semibold select-none shadow-md shadow-indigo-600/15 hover:shadow-indigo-600/25 active:scale-95 transition cursor-pointer font-sans border border-indigo-500/35"
            title="Print preview or save your document directly as high-fidelity custom PDF (Alt+P)"
          >
            <Printer className="h-3.5 w-3.5 text-indigo-100" />
            <span className="hidden sm:inline font-mono">Export as PDF</span>
          </button>

          {/* Manual Save Button - visible when Auto-save is disabled */}
          {!autoSaveEnabled && (
            <button
              onClick={handleManualSave}
              className="flex items-center gap-1.5 px-3 py-1.5 bg-emerald-600/10 hover:bg-emerald-600/25 border border-emerald-500/30 hover:border-emerald-550 text-emerald-400 hover:text-emerald-300 rounded-lg text-xs font-semibold select-none transition cursor-pointer font-sans duration-150 shadow-md animate-pulse shrink-0"
              title="Save current progress manually to local storage & cloud (Ctrl+S)"
            >
              <Save className="h-3.5 w-3.5" />
              <span className="hidden sm:inline font-mono">Save Draft</span>
            </button>
          )}

          {/* Font Family Selector Dropdown for Workspace Editor */}
          <div className="hidden sm:flex items-center gap-1.5 px-3 py-1.5 bg-[#15181E] border border-slate-800 rounded-lg text-xs font-semibold select-none transition font-sans hover:border-slate-700/80">
            <Type className="h-3.5 w-3.5 text-blue-500" />
            <select
              value={editorFontFamily}
              onChange={(e) => {
                const val = e.target.value as "sans" | "serif" | "mono";
                setEditorFontFamily(val);
                localStorage.setItem("workspace_pref_editorFontFamily", val);
                addLog(`Workspace editor font family adjusted to ${val.toUpperCase()}`, "info");
              }}
              className="bg-transparent text-slate-300 hover:text-white text-xs font-mono focus:outline-none cursor-pointer border-none p-0 pr-1.5"
              title="Select workspace editor font family"
            >
              <option value="mono" className="bg-[#15181E] text-slate-300">Monospace</option>
              <option value="sans" className="bg-[#15181E] text-slate-300">Sans-Serif</option>
              <option value="serif" className="bg-[#15181E] text-slate-300">Serif</option>
            </select>
          </div>

          {/* Preferences & Layout Configuration Dropdown Trigger */}
          <button
            onClick={() => setIsPreferencesDropdownOpen(!isPreferencesDropdownOpen)}
            className="flex items-center gap-1.5 px-3 py-1.5 bg-[#15181E] border border-slate-855 hover:bg-slate-800 text-slate-305 hover:text-white rounded-lg text-xs font-semibold select-none transition cursor-pointer font-sans"
            title="Configure application layout, theme parameters, input writing pads and document export styles"
          >
            <Settings className="h-3.5 w-3.5 text-blue-500" />
            <span className="hidden md:inline font-mono">Preferences</span>
            <span className="text-[10px] bg-blue-600/20 text-blue-400 rounded-md px-1 py-0.2 font-mono">
              {activeLayoutPreset.toUpperCase()}
            </span>
          </button>

          {/* Dropdown menu modal popover overlay */}
          {isPreferencesDropdownOpen && (
            <div className="absolute right-0 top-10 bg-[#15181E] border border-[#1E293B] rounded-xl shadow-2xl p-4 w-[290px] md:w-[350px] z-50 text-left space-y-4 animate-fadeIn">
              <div className="flex items-center justify-between border-b border-slate-800 pb-2">
                <div className="flex items-center gap-1.5">
                  <Layers className="h-4 w-4 text-emerald-400" />
                  <span className="text-xs font-bold text-white uppercase tracking-wider font-mono">Workspace Settings</span>
                </div>
                <button
                  onClick={() => setIsPreferencesDropdownOpen(false)}
                  className="text-slate-500 hover:text-white transition p-1 hover:bg-slate-800 rounded cursor-pointer"
                >
                  <X className="h-3.5 w-3.5" />
                </button>
              </div>

              {/* Theme options */}
              <div className="space-y-1.5">
                <span className="block text-[10px] uppercase font-semibold text-slate-505 tracking-wider font-mono">App Theme</span>
                <div className="grid grid-cols-3 gap-1">
                  {(["system", "dark", "light"] as const).map((t) => (
                    <button
                      key={t}
                      type="button"
                      onClick={() => setThemeMode(t)}
                      className={`text-[10px] px-2 py-1 rounded border font-mono transition text-center cursor-pointer ${
                        themeMode === t
                          ? "bg-blue-600/15 border-blue-500 text-white font-semibold"
                          : "bg-[#0F1115] border-slate-800 text-slate-400 hover:text-white"
                      }`}
                    >
                      {t === "system" ? "💻 OS" : t === "dark" ? "🌙 Dark" : "☀️ Light"}
                    </button>
                  ))}
                </div>
              </div>

              {/* Preset Layout Options */}
              <div className="space-y-1.5">
                <span className="block text-[10px] uppercase font-semibold text-slate-505 tracking-wider font-mono">Layout Preset</span>
                <div className="grid grid-cols-3 gap-1">
                  {(["default", "writer", "collab"] as const).map((p) => (
                    <button
                      key={p}
                      type="button"
                      onClick={() => handleApplyPreset(p)}
                      className={`text-[10px] px-2 py-1 rounded border font-mono transition text-center cursor-pointer ${
                        activeLayoutPreset === p
                          ? "bg-emerald-600/15 border-emerald-500 text-white font-semibold"
                          : "bg-[#0F1115] border-slate-800 text-slate-400 hover:text-white"
                      }`}
                    >
                      {p === "default" ? "🏢 Grid" : p === "writer" ? "📝 Writer" : "🤝 Collab"}
                    </button>
                  ))}
                </div>
              </div>

              {/* Container checklist controls */}
              <div className="space-y-1.5 bg-[#0F1115]/60 p-2.5 rounded-lg border border-slate-805">
                <span className="block text-[10px] uppercase font-semibold text-slate-505 tracking-wider font-mono">Workspace Layout Toggles</span>
                <div className="flex flex-col gap-1.5 pt-1">
                  
                  <div className="flex items-center justify-between text-[11px] text-slate-300 font-mono hover:bg-slate-800/20 px-1 py-0.5 rounded transition select-none">
                    <span>📁 File Browser</span>
                    <button
                      type="button"
                      onClick={() => {
                        setShowFolderSidebar(!showFolderSidebar);
                        handleApplyPreset("default");
                      }}
                      className={`relative inline-flex h-4 w-8 flex-shrink-0 items-center rounded-full transition-colors duration-200 focus:outline-none cursor-pointer ${
                        showFolderSidebar ? "bg-blue-600" : "bg-slate-700"
                      }`}
                      title="Toggle File browser sidebar visibility"
                    >
                      <span
                        className={`inline-block h-2.5 w-2.5 transform rounded-full bg-white transition-transform duration-200 ${
                          showFolderSidebar ? "translate-x-4.5" : "translate-x-1"
                        }`}
                      />
                    </button>
                  </div>

                  <div className="flex items-center justify-between text-[11px] text-slate-300 font-mono hover:bg-slate-800/20 px-1 py-0.5 rounded transition select-none">
                    <span>🤖 Chat & Co-pilot</span>
                    <button
                      type="button"
                      onClick={() => {
                        setShowAIPanel(!showAIPanel);
                        handleApplyPreset("default");
                      }}
                      className={`relative inline-flex h-4 w-8 flex-shrink-0 items-center rounded-full transition-colors duration-200 focus:outline-none cursor-pointer ${
                        showAIPanel ? "bg-blue-600" : "bg-slate-700"
                      }`}
                      title="Toggle Document Chat & AI Co-pilot panel visibility"
                    >
                      <span
                        className={`inline-block h-2.5 w-2.5 transform rounded-full bg-white transition-transform duration-200 ${
                          showAIPanel ? "translate-x-4.5" : "translate-x-1"
                        }`}
                      />
                    </button>
                  </div>

                  <div className="flex items-center justify-between text-[11px] text-slate-300 font-mono hover:bg-slate-800/20 px-1 py-0.5 rounded transition select-none">
                    <span>📊 Logs Window</span>
                    <button
                      type="button"
                      onClick={() => {
                        setShowLogs(!showLogs);
                        handleApplyPreset("default");
                      }}
                      className={`relative inline-flex h-4 w-8 flex-shrink-0 items-center rounded-full transition-colors duration-200 focus:outline-none cursor-pointer ${
                        showLogs ? "bg-blue-600" : "bg-slate-700"
                      }`}
                      title="Toggle Handshake Logs visibility"
                    >
                      <span
                        className={`inline-block h-2.5 w-2.5 transform rounded-full bg-white transition-transform duration-200 ${
                          showLogs ? "translate-x-4.5" : "translate-x-1"
                        }`}
                      />
                    </button>
                  </div>

                  <div className="flex items-center justify-between text-[11px] text-slate-300 font-mono hover:bg-slate-800/20 px-1 py-0.5 rounded transition select-none">
                    <span>👁️ Live Preview</span>
                    <button
                      type="button"
                      onClick={() => {
                        setShowPreview(!showPreview);
                        handleApplyPreset("default");
                      }}
                      className={`relative inline-flex h-4 w-8 flex-shrink-0 items-center rounded-full transition-colors duration-200 focus:outline-none cursor-pointer ${
                        showPreview ? "bg-blue-600" : "bg-slate-700"
                      }`}
                      title="Toggle PDF Document Preview visibility"
                    >
                      <span
                        className={`inline-block h-2.5 w-2.5 transform rounded-full bg-white transition-transform duration-200 ${
                          showPreview ? "translate-x-4.5" : "translate-x-1"
                        }`}
                      />
                    </button>
                  </div>

                  <div className="flex items-center justify-between text-[11px] text-slate-300 font-mono hover:bg-slate-800/20 px-1 py-0.5 rounded transition select-none">
                    <span>✨ AI Assistant Tools</span>
                    <button
                      type="button"
                      onClick={() => {
                        setShowAiTools(!showAiTools);
                        handleApplyPreset("default");
                      }}
                      className={`relative inline-flex h-4 w-8 flex-shrink-0 items-center rounded-full transition-colors duration-200 focus:outline-none cursor-pointer ${
                        showAiTools ? "bg-blue-600" : "bg-slate-700"
                      }`}
                      title="Toggle AI Assistant Tools visibility"
                    >
                      <span
                        className={`inline-block h-2.5 w-2.5 transform rounded-full bg-white transition-transform duration-200 ${
                          showAiTools ? "translate-x-4.5" : "translate-x-1"
                        }`}
                      />
                    </button>
                  </div>

                  <div className="flex items-center justify-between text-[11px] text-slate-300 font-mono hover:bg-slate-800/20 px-1 py-0.5 rounded transition select-none">
                    <span>💾 Auto-save</span>
                    <button
                      type="button"
                      onClick={() => {
                        const nextVal = !autoSaveEnabled;
                        setAutoSaveEnabled(nextVal);
                        localStorage.setItem("workspace_pref_autoSave", String(nextVal));
                        addLog(`LocalStorage Auto-save mechanism ${nextVal ? "ENABLED" : "DISABLED"}.`, nextVal ? "success" : "info");
                      }}
                      className={`relative inline-flex h-4 w-8 flex-shrink-0 items-center rounded-full transition-colors duration-200 focus:outline-none cursor-pointer ${
                        autoSaveEnabled ? "bg-blue-600" : "bg-slate-700"
                      }`}
                      title="Toggle automatic progress saving to local storage"
                    >
                      <span
                        className={`inline-block h-2.5 w-2.5 transform rounded-full bg-white transition-transform duration-200 ${
                          autoSaveEnabled ? "translate-x-4.5" : "translate-x-1"
                        }`}
                      />
                    </button>
                  </div>

                </div>
              </div>

              {/* Input Themes selectors */}
              <div className="space-y-1.5">
                <span className="block text-[10px] uppercase font-semibold text-slate-505 tracking-wider font-mono">Editor Panel Themes</span>
                <div className="grid grid-cols-2 gap-1">
                  {(["modern", "terminal", "notebook", "ivory", "monokai", "darcula", "solarized-dark", "solarized-light"] as const).map((it) => (
                    <button
                      key={it}
                      type="button"
                      onClick={() => {
                        setDocumentInputTheme(it);
                        addLog(`Input workspace theme adjusted to ${it.toUpperCase()}`, "info");
                      }}
                      className={`text-[10px] px-2 py-1 rounded border font-mono transition text-center cursor-pointer ${
                        documentInputTheme === it
                          ? "bg-purple-600/15 border-purple-500 text-white font-bold animate-pulse"
                          : "bg-[#0F1115] border-slate-800 text-slate-400 hover:text-white"
                      }`}
                    >
                      {it === "modern" ? "💻 Slate" :
                       it === "terminal" ? "📟 Terminal" :
                       it === "notebook" ? "☕ Journal" :
                       it === "ivory" ? "🥛 Ivory" :
                       it === "monokai" ? "🌺 Monokai" :
                       it === "darcula" ? "🧛 Darcula" :
                       it === "solarized-dark" ? "☀️ Solar-D" : "🌤️ Solar-L"}
                    </button>
                  ))}
                </div>
              </div>

              {/* Export Style document themes select */}
              <div className="space-y-1.5">
                <span className="block text-[10px] uppercase font-semibold text-slate-505 tracking-wider font-mono">PDF Page Themes</span>
                <div className="grid grid-cols-2 gap-1">
                  {(["corporate", "tech", "academic", "sunset", "midnight"] as const).map((et) => (
                    <button
                      key={et}
                      type="button"
                      onClick={() => setDocumentExportTheme(et)}
                      className={`text-[10px] px-2 py-1 rounded border font-mono transition text-center cursor-pointer ${
                        documentExportTheme === et
                          ? "bg-[#6366F1]/15 border-[#6366F1] text-white font-bold"
                          : "bg-[#0F1115] border-slate-800 text-slate-400 hover:text-white"
                      }`}
                    >
                      {et === "corporate" ? "👔 Corp" :
                       et === "tech" ? "🦾 Tech" :
                       et === "academic" ? "📚 Academ" :
                       et === "sunset" ? "🌇 Sunset" : "🌃 Midnight"}
                    </button>
                  ))}
                </div>
              </div>

              {/* Print & PDF Layout Controls */}
              <div className="space-y-2 border-t border-slate-900 pt-2.5">
                <span className="block text-[10px] uppercase font-semibold text-slate-505 tracking-wider font-mono">Print Layout Addons</span>
                <div className="space-y-1.5 text-slate-350 text-[11px] font-sans">
                  <label className="flex items-center gap-2 cursor-pointer hover:text-white transition select-none">
                    <input 
                      type="checkbox" 
                      checked={printIncludeCoverPage}
                      onChange={(e) => setPrintIncludeCoverPage(e.target.checked)}
                      className="rounded border-slate-800 bg-[#0F1115] text-[#6366F1] focus:ring-0 w-3.5 h-3.5 cursor-pointer"
                    />
                    <span>Render Cover Page first</span>
                  </label>
                  <label className="flex items-center gap-2 cursor-pointer hover:text-white transition select-none">
                    <input 
                      type="checkbox" 
                      checked={printIncludeQRCode}
                      onChange={(e) => setPrintIncludeQRCode(e.target.checked)}
                      className="rounded border-slate-800 bg-[#0F1115] text-[#6366F1] focus:ring-0 w-3.5 h-3.5 cursor-pointer"
                    />
                    <span>Render dynamic QR & sharing footer</span>
                  </label>

                  {/* Dynamic Status Watermarks Selection */}
                  <div className="pt-2 border-t border-slate-850/40 space-y-1.5">
                    <span className="block text-[9.5px] uppercase font-bold text-slate-400 tracking-wider font-mono">Document Print Watermark</span>
                    <div className="grid grid-cols-4 gap-1">
                      {(["none", "confidential", "draft", "custom"] as const).map((type) => (
                        <button
                          key={type}
                          type="button"
                          onClick={() => setPrintWatermarkType(type)}
                          className={`text-[8.5px] py-1 px-0.5 rounded border font-mono transition text-center cursor-pointer capitalize ${
                            printWatermarkType === type
                              ? "bg-amber-500/15 border-amber-500/80 text-amber-300 font-bold"
                              : "bg-[#0F1115] border-slate-800 text-slate-400 hover:text-slate-200"
                          }`}
                        >
                          {type}
                        </button>
                      ))}
                    </div>
                    {printWatermarkType === "custom" && (
                      <div className="mt-1 animate-fadeIn">
                        <input
                          type="text"
                          value={printWatermarkText}
                          onChange={(e) => setPrintWatermarkText(e.target.value.toUpperCase())}
                          maxLength={40}
                          placeholder="CUSTOM WATERMARK E.G. DRAFT V2..."
                          className="w-full text-[9px] px-2 py-1 bg-[#0F1115] border border-slate-850 rounded text-slate-200 font-mono focus:outline-none focus:border-amber-500/50 uppercase tracking-widest placeholder:text-slate-650"
                        />
                      </div>
                    )}
                  </div>
                </div>
              </div>

              {/* Synchronizer settings status line */}
              <div className="flex items-center justify-between pt-2 border-t border-slate-800 text-[9px] font-mono select-none">
                <span className="text-slate-500 font-sans">Preferences Sync</span>
                {prefSyncStatus === "syncing" && (
                  <span className="text-amber-400 flex items-center gap-1 animate-pulse font-sans">
                    Synchronizing...
                  </span>
                )}
                {prefSyncStatus === "synced" && (
                  <span className="text-emerald-400 flex items-center gap-0.5 font-sans">
                    ✓ Synced
                  </span>
                )}
                {prefSyncStatus === "error" && (
                  <span className="text-red-405 font-sans">⚠️ Error</span>
                )}
                {prefSyncStatus === "idle" && (
                  <span className="text-slate-400 hover:text-blue-405 cursor-pointer font-sans" onClick={syncPreferencesToServer}>
                    ● Synced
                  </span>
                )}
              </div>

            </div>
          )}

          <div className="hidden sm:block px-2.5 py-0.5 bg-amber-900/10 text-amber-500 border border-amber-500/20 rounded-full text-[10px] font-bold uppercase tracking-wider">
            {user.tier.toUpperCase()}
          </div>
          <div className="hidden md:flex items-center space-x-2 text-xs text-slate-400">
            <User className="h-3.5 w-3.5 text-slate-500" />
            <span className="truncate max-w-[125px] font-mono text-xs">{user.email || "Guest"}</span>
          </div>
        </div>

      </div>
    </header>
  );
}