import { OPEN_EXPERIMENT_SUCCEEDED } from '../actions/experiments'
import { CHANGE_LOAD_METRIC } from '../actions/simulation/load-metric'
import { SET_PLAYING } from '../actions/simulation/playback'
import { GO_TO_TICK, SET_LAST_SIMULATED_TICK } from '../actions/simulation/tick'
import { OPEN_SIMULATION_SUCCEEDED } from '../actions/simulations'

export function currentExperimentId(state = '-1', action) {
    switch (action.type) {
        case OPEN_EXPERIMENT_SUCCEEDED:
            return action.experimentId
        case OPEN_SIMULATION_SUCCEEDED:
            return '-1'
        default:
            return state
    }
}

export function currentTick(state = 0, action) {
    switch (action.type) {
        case GO_TO_TICK:
            return action.tick
        case OPEN_EXPERIMENT_SUCCEEDED:
            return 0
        default:
            return state
    }
}

export function loadMetric(state = 'LOAD', action) {
    switch (action.type) {
        case CHANGE_LOAD_METRIC:
            return action.metric
        default:
            return state
    }
}

export function isPlaying(state = false, action) {
    switch (action.type) {
        case SET_PLAYING:
            return action.playing
        case OPEN_EXPERIMENT_SUCCEEDED:
            return false
        default:
            return state
    }
}

export function lastSimulatedTick(state = -1, action) {
    switch (action.type) {
        case SET_LAST_SIMULATED_TICK:
            return action.tick
        case OPEN_EXPERIMENT_SUCCEEDED:
            return -1
        default:
            return state
    }
}