HomeworksReducer.js

/* eslint-disable no-case-declarations */
import {
  ADD_SOLUTION,
  ADD_TASK,
  CORRECT_SOLUTION,
  DELETE_TASK,
  EDIT_TASK,
  GET_DOCUMENTS,
  GET_PROFILES,
  GET_SOLUTIONS,
  GET_TASKS,
} from '../actions/types';

const INITIAL_STATE = {
  id: 0,
  tasks: [],
  solutions: [],
  profiles: [],
  documents: [],
};

export default (state = INITIAL_STATE, action) => {
  switch (action.type) {
    case GET_TASKS:
      return { ...state, tasks: action.payload };
    case GET_SOLUTIONS:
      return { ...state, solutions: action.payload };
    case CORRECT_SOLUTION:
      const modifiedSolution = state.solutions.find(
        (sol) => sol.id === action.payload.id
      );
      const modifiedSolutions = state.solutions.slice();
      modifiedSolutions.splice(
        state.solutions.indexOf(modifiedSolution),
        1,
        action.payload
      );
      return { ...state, solutions: [...modifiedSolutions] };
    case ADD_SOLUTION:
      return {
        ...state,
        solutions: [action.payload, ...state.solutions],
        id: action.payload.id,
      };
    case ADD_TASK:
      return { ...state, tasks: [action.payload, ...state.tasks] };
    case DELETE_TASK:
      return {
        ...state,
        tasks: [
          ...state.tasks.slice(0, state.tasks.indexOf(action.payload)),
          ...state.tasks.slice(state.tasks.indexOf(action.payload) + 1),
        ],
      };
    case EDIT_TASK:
      return {
        ...state,
        tasks: [
          ...state.tasks.map((task) => {
            if (task.id !== action.payload.id) {
              return task;
            }
            return action.payload;
          }),
        ],
      };
    case GET_PROFILES:
      return { ...state, profiles: action.payload };
    case GET_DOCUMENTS:
      return { ...state, documents: action.payload };
    default:
      return state;
  }
};