import org.apollo.game.action.ActionBlock
import org.apollo.game.action.AsyncDistancedAction
import org.apollo.game.action.DistancedAction
import org.apollo.game.message.impl.ObjectActionMessage
import org.apollo.game.model.Position
import org.apollo.game.model.World
import org.apollo.game.model.entity.Player
import org.apollo.game.model.entity.obj.GameObject
import org.apollo.game.plugin.api.Definitions
import org.apollo.game.plugin.api.expireObject
import org.apollo.game.plugin.api.findObject
import org.apollo.game.plugin.api.mining
import org.apollo.game.plugin.api.rand
import org.apollo.game.plugin.skills.mining.Ore
import org.apollo.game.plugin.skills.mining.PICKAXES
import org.apollo.game.plugin.skills.mining.Pickaxe
import org.apollo.game.plugin.skills.mining.lookupOreRock
import org.apollo.net.message.Message
import java.util.Optional

class MiningTarget(val objectId: Int, val position: Position, val ore: Ore) {

    fun getObject(world: World): Optional<GameObject> {
        val region = world.regionRepository.fromPosition(position)
        return region.findObject(position, objectId)
    }

    fun isSuccessful(mob: Player): Boolean {
        val offset = if (ore.chanceOffset) 1 else 0
        val percent = (ore.chance * mob.mining.current + offset) * 100

        return rand(100) < percent
    }

}

class MiningAction(
    player: Player,
    private val tool: Pickaxe,
    private val target: MiningTarget
) : AsyncDistancedAction<Player>(PULSES, true, player, target.position, ORE_SIZE) {

    companion object {
        private val PULSES = 0
        private val ORE_SIZE = 1

        fun pickaxeFor(player: Player): Pickaxe? {
            return PICKAXES
                .filter { it.level <= player.mining.current }
                .filter { player.equipment.contains(it.id) || player.inventory.contains(it.id) }
                .sortedByDescending { it.level }
                .firstOrNull()
        }

        /**
         * Starts a [MiningAction] for the specified [Player], terminating the [Message] that triggered it.
         */
        fun start(message: ObjectActionMessage, player: Player, ore: Ore) {
            val pickaxe = pickaxeFor(player)
            if (pickaxe != null) {
                val action = MiningAction(player, pickaxe, MiningTarget(message.id, message.position, ore))
                player.startAction(action)
            } else {
                player.sendMessage("You do not have a pickaxe for which you have the level to use.")
            }

            message.terminate()
        }
    }

    override fun action(): ActionBlock = {
        mob.turnTo(position)

        val level = mob.mining.current
        if (level < target.ore.level) {
            mob.sendMessage("You do not have the required level to mine this rock.")
            stop()
        }

        mob.sendMessage("You swing your pick at the rock.")
        mob.playAnimation(tool.animation)

        wait(tool.pulses)

        val obj = target.getObject(mob.world)
        if (!obj.isPresent) {
            stop()
        }

        if (target.isSuccessful(mob)) {
            if (mob.inventory.freeSlots() == 0) {
                mob.inventory.forceCapacityExceeded()
                stop()
            }

            if (mob.inventory.add(target.ore.id)) {
                val oreName = Definitions.item(target.ore.id)?.name?.toLowerCase()
                mob.sendMessage("You manage to mine some $oreName")

                mob.mining.experience += target.ore.exp
                mob.world.expireObject(obj.get(), target.ore.objects[target.objectId]!!, target.ore.respawn)
                stop()
            }
        }
    }
}

class ExpiredProspectingAction(
    mob: Player,
    position: Position
) : DistancedAction<Player>(PROSPECT_PULSES, true, mob, position, ORE_SIZE) {

    companion object {
        private val PROSPECT_PULSES = 0
        private val ORE_SIZE = 1
    }

    override fun executeAction() {
        mob.sendMessage("There is currently no ore available in this rock.")
        stop()
    }

}

class ProspectingAction(
    player: Player,
    position: Position,
    private val ore: Ore
) : AsyncDistancedAction<Player>(PROSPECT_PULSES, true, player, position, ORE_SIZE) {

    companion object {
        private val PROSPECT_PULSES = 3
        private val ORE_SIZE = 1

        /**
         * Starts a [MiningAction] for the specified [Player], terminating the [Message] that triggered it.
         */
        fun start(message: ObjectActionMessage, player: Player, ore: Ore) {
            val action = ProspectingAction(player, message.position, ore)
            player.startAction(action)

            message.terminate()
        }

    }

    override fun action(): ActionBlock = {
        mob.sendMessage("You examine the rock for ores...")
        mob.turnTo(position)

        wait()

        val oreName = Definitions.item(ore.id)?.name?.toLowerCase()
        mob.sendMessage("This rock contains $oreName")

        stop()
    }

}

on { ObjectActionMessage::class }
    .where { option == 1 }
    .then {
        val ore = lookupOreRock(id)
        if (ore != null) {
            MiningAction.start(this, it, ore)
        }
    }

on { ObjectActionMessage::class }
    .where { option == 2 }
    .then {
        val ore = lookupOreRock(id)
        if (ore != null) { // TODO send expired action if rock is expired
            ProspectingAction.start(this, it, ore)
        }
    }