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import { create } from 'zustand';
import type { RoomFile, ProgrammingLanguage, EditorTab } from '../types';

interface EditorState {
  files: RoomFile[];
  activeFileId: string | null;
  tabs: EditorTab[];
  theme: 'vs-dark' | 'light' | 'hc-black';
  fontSize: number;
  wordWrap: 'on' | 'off' | 'bounded';
  minimap: boolean;
  lineNumbers: 'on' | 'off' | 'relative';
  isExecuting: boolean;
  output: string;
  executionLanguage: ProgrammingLanguage;

  setFiles: (files: RoomFile[]) => void;
  setActiveFile: (fileId: string) => void;
  openTab: (file: RoomFile) => void;
  closeTab: (fileId: string) => void;
  markTabDirty: (fileId: string, isDirty: boolean) => void;
  setTheme: (theme: 'vs-dark' | 'light' | 'hc-black') => void;
  setFontSize: (size: number) => void;
  setWordWrap: (wrap: 'on' | 'off' | 'bounded') => void;
  setMinimap: (enabled: boolean) => void;
  setExecuting: (executing: boolean) => void;
  setOutput: (output: string) => void;
  appendOutput: (chunk: string) => void;
  clearOutput: () => void;
  setExecutionLanguage: (lang: ProgrammingLanguage) => void;
}

export const useEditorStore = create<EditorState>((set) => ({
  files: [], activeFileId: null, tabs: [],
  theme: 'vs-dark', fontSize: 14, wordWrap: 'on', minimap: true, lineNumbers: 'on',
  isExecuting: false, output: '', executionLanguage: 'javascript',

  setFiles: (files) => set({ files }),
  setActiveFile: (fileId) => set((s) => ({ activeFileId: fileId, tabs: s.tabs.map((t) => ({ ...t, isActive: t.fileId === fileId })) })),
  openTab: (file) => set((s) => {
    if (s.tabs.find((t) => t.fileId === file.id)) {
      return { activeFileId: file.id, tabs: s.tabs.map((t) => ({ ...t, isActive: t.fileId === file.id })) };
    }
    return {
      activeFileId: file.id,
      tabs: [...s.tabs.map((t) => ({ ...t, isActive: false })), { id: file.id, fileId: file.id, name: file.name, path: file.path, language: file.language, isDirty: false, isActive: true }],
    };
  }),
  closeTab: (fileId) => set((s) => {
    const filtered = s.tabs.filter((t) => t.fileId !== fileId);
    return { tabs: filtered, activeFileId: s.activeFileId === fileId ? (filtered[filtered.length - 1]?.fileId || null) : s.activeFileId };
  }),
  markTabDirty: (fileId, isDirty) => set((s) => ({ tabs: s.tabs.map((t) => t.fileId === fileId ? { ...t, isDirty } : t) })),
  setTheme: (theme) => set({ theme }),
  setFontSize: (fontSize) => set({ fontSize }),
  setWordWrap: (wordWrap) => set({ wordWrap }),
  setMinimap: (minimap) => set({ minimap }),
  setExecuting: (isExecuting) => set({ isExecuting }),
  setOutput: (output) => set({ output }),
  appendOutput: (chunk) => set((s) => ({ output: s.output + chunk })),
  clearOutput: () => set({ output: '' }),
  setExecutionLanguage: (executionLanguage) => set({ executionLanguage }),
}));