import { createSlice } from '@reduxjs/toolkit';

const initialState = {
  activities: [],
  currentActivity: null,
  registrations: [],
  loading: false,
  error: null,
};

const activitySlice = createSlice({
  name: 'activity',
  initialState,
  reducers: {
    setLoading: (state, action) => {
      state.loading = action.payload;
    },
    setError: (state, action) => {
      state.error = action.payload;
      state.loading = false;
    },
    setActivities: (state, action) => {
      state.activities = action.payload;
      state.loading = false;
    },
    setCurrentActivity: (state, action) => {
      state.currentActivity = action.payload;
    },
    setRegistrations: (state, action) => {
      state.registrations = action.payload;
      state.loading = false;
    },
    addActivity: (state, action) => {
      state.activities.unshift(action.payload);
    },
    updateActivity: (state, action) => {
      const index = state.activities.findIndex(activity => activity.id === action.payload.id);
      if (index !== -1) {
        state.activities[index] = action.payload;
      }
    },
    deleteActivity: (state, action) => {
      state.activities = state.activities.filter(activity => activity.id !== action.payload);
    },
    updateRegistrationStatus: (state, action) => {
      const { registrationId, status } = action.payload;
      const registration = state.registrations.find(reg => reg.id === registrationId);
      if (registration) {
        registration.status = status;
      }
    },
  },
});

export const {
  setLoading,
  setError,
  setActivities,
  setCurrentActivity,
  setRegistrations,
  addActivity,
  updateActivity,
  deleteActivity,
  updateRegistrationStatus,
} = activitySlice.actions;

export default activitySlice.reducer;