import store from '@/store';

const exam = {
    namespaced: true,

    state: {
        started: false,     //考试状态
        usedTime: 0, 	    //考试当前所用时间
        totalTime: 0,       //考试总时间
        timeInterval: null, //计时器
        suspend: false,     //暂停
    },
    getters: {
        started: (state) => {
            return state.started;
        },
        usedTime: (state) => {
            return state.usedTime;
        },
        totalTime: (state) => {
            return state.totalTime;
        },
        suspend: (state) => {
            return state.suspend;
        }
    },
    mutations: {
        setStarted: (state, started) => {
            state.started = started;
        },
        setSuspend: (state, suspend) => {
            state.suspend = suspend;
        },
        setUsedTime: (state, usedTime) => {
            state.usedTime = usedTime;
        },
        setTotalTime: (state, totalTime) => {
            state.totalTime = totalTime;
        },
        countUsedTime: (state) => {
            if (state.timeInterval) {
                clearInterval(state.timeInterval);
                state.timeInterval = null;
            }
            state.timeInterval = setInterval(() => {
                if (!state.suspend) {
                    state.usedTime++;
                }
            }, 1000);
        },
        stopCountTime: (state) => {
            if (state.timeInterval) {
                clearInterval(state.timeInterval);
                state.timeInterval = null;
            }
        }
    },
    actions: {
        start({ commit }) {
            commit('setStarted', true);
            commit('setSuspend', false);
            commit('setUsedTime', 0);
            commit('countUsedTime');
        },
        over({ commit }) {
            commit('setStarted', false);
            commit('setSuspend', true);
            commit('setUsedTime', 0);
            commit('stopCountTime');
        },
        isOver() {
            let trainingList = store.getters['trainingList/trainingList'];
            let doList = trainingList.filter(elem => {
                if (elem.usedTime !== undefined) return true;
            });

            if (doList.length >= trainingList.length) {
                return true;
            }
        },
        setSuspend({ commit }, suspend) {
            commit('setSuspend', suspend);
        },
        countUsedTime({ commit }) {
            commit('countUsedTime');
        },
        setUsedTime({ state }, usedTime) {
            if (usedTime) {
                state.usedTime = usedTime;
            }
        },
        setTotalTime({ commit }, totalTime) {
            if (totalTime) {
                commit('setTotalTime', totalTime);
            }
        }
    }
};

export default exam;