let pathfinder
//TODO replace with simple pathfinder motions

let cfg = {}
let bot = {}
let inv
// cfg.autosleep = false

function sleep(quiet = cfg.sleep.quiet) {
    if(bot.game.dimension !== "minecraft:overworld" || cfg.sleep.force){
        !quiet && bot.chat("can't sleep, not in overworld now")
        return
    }
    if (bot.isSleeping && !cfg.sleep.force) {
        !quiet && bot.chat("already in bed!")
        return
    }
    let bed = bot.findBlock({
        matching: block => bot.isABed(block)
    })
    let bed_occupied = bed && bot.parseBedMetadata(bed).occupied
    if (bed && bed_occupied) {
        bot.lookAt(bed.position)
        bed = bot.findBlock({
            matching: block => bot.isABed(block) && !bot.parseBedMetadata(block).occupied
        }) || bed
        bed_occupied = bot.parseBedMetadata(bed).occupied
    }
    if (bed && !bed_occupied) {
        bot.lookAt(bed.position)
        bot.waitForChunksToLoad(() => {
            cfg.plugins.mover && cfg.plugins.mover.moveNear(bed.position, 2)
            bot.once('goal_reached', (goal) => {
                console.info(goal)
                try {
                    bot.sleep(bed, (err) => {
                        if (err) {
                            !quiet && bot.chat(`can't sleep: ${err.message}`)
                        } else {
                            !quiet && bot.chat("zzz")
                            // apparently, `bot.isSleeping = true` takes a while
                            // maybe it's async
                            console.log("sleeping? ", bot.isSleeping)
                        }
                    })
                } catch (error) {
                    console.error(error)
                }
            })
        })
    } else if (bed = bot.inventory.items().filter(bot.isABed)[0]) {
        const v = require('vec3')
        bot.equip(bed, "hand", (err) => { if (err) console.error(err) })
        bot.waitForChunksToLoad(() => {
            let refBlock =
                // FIXME hack to get around findBlock returning null
                bot.blockAt(bot.entity.position.offset(1, 0, 1), false)
            // bot.findBlock({
            //     matching: (block) => {
            //         // if (block && block.type !== 0 && block.position) {
            //         if (block && block.position) {
            //             console.info("found", block)
            //             const blockAbove = bot.blockAt(block.position.offset(0, 1, 0))
            //             return !blockAbove || blockAbove.type === 0
            //         }
            //         // console.info("not found", block)
            //         return false
            //     }
            //     , maxDistance: 10
            // })
            console.log(refBlock)
            bot.placeBlock(refBlock, new v.Vec3(0, 1, 0), console.error)
            setTimeout(sleep, 3000, true)
        })
    } else {
        // TODO: use mover
        // bot.gameplay.solveFor(
        //     new ObtainItem("bed"), (err) => {
        //         if (err) {
        !quiet && bot.chat(`need a${bed_occupied ? "n unoccupied" : ""} bed: may not see if just placed`)
        //         }
        //     }
        // )
        // bot.chat('/afk')
    }
    bot.pathfinder.movements
}

function wake() {
    bot.wake((err) => {
        if (err) {
            bot.chat(`can't wake up: ${err.message}`)
        } else {
            bot.chat('woke up')
        }
    })
}

function autoSleep() {
    if (!bot.time.isDay && !cfg.sleep.timeoutFn && cfg.sleep.auto && !bot.isSleeping) {
        sleep()
        cfg.sleep.timeoutFn = setTimeout(() => { cfg.sleep.timeoutFn = null }, cfg.sleep.timeout)
        console.log("sleeping?", bot.isSleeping, bot.time.isDay, bot.time.timeOfDay)
    }
}

const load = (config) => {
    cfg = config
    bot = cfg.bot
    cfg.sleep = {
        auto: true,
        // timeout: 30 * 1000,
        timeout: 2 * 60 * 1000,
        quiet: !!cfg.quiet
    }

    pathfinder = bot.pathfinder || require('mineflayer-pathfinder').pathfinder
    // bot.loadPlugin(pathfinder)
    inv = cfg.plugins["inventory"]
    bot.on("time", autoSleep)

}

const unload = () => {
    bot.off("time", autoSleep)
}

module.exports = { load, unload, sleep, wake }