import { create } from "zustand";

export interface TimelineClip {
  id: string;
  mediaId: string;
  name: string;
  duration: number;
}

export interface TimelineTrack {
  id: string;
  name: string;
  type: "video" | "audio" | "effects";
  clips: TimelineClip[];
}

interface TimelineStore {
  tracks: TimelineTrack[];

  // Actions
  addTrack: (type: "video" | "audio" | "effects") => void;
  removeTrack: (trackId: string) => void;
  addClipToTrack: (trackId: string, clip: Omit<TimelineClip, "id">) => void;
}

export const useTimelineStore = create<TimelineStore>((set) => ({
  tracks: [],

  addTrack: (type) => {
    const newTrack: TimelineTrack = {
      id: crypto.randomUUID(),
      name: `${type.charAt(0).toUpperCase() + type.slice(1)} Track`,
      type,
      clips: [],
    };
    set((state) => ({
      tracks: [...state.tracks, newTrack],
    }));
  },

  removeTrack: (trackId) => {
    set((state) => ({
      tracks: state.tracks.filter((track) => track.id !== trackId),
    }));
  },

  addClipToTrack: (trackId, clipData) => {
    const newClip: TimelineClip = {
      ...clipData,
      id: crypto.randomUUID(),
    };

    set((state) => ({
      tracks: state.tracks.map((track) =>
        track.id === trackId
          ? { ...track, clips: [...track.clips, newClip] }
          : track
      ),
    }));
  },
}));