//
//  MapStartCommand.swift
//  KCD
//
//  Created by Hori,Masaki on 2017/01/18.
//  Copyright © 2017年 Hori,Masaki. All rights reserved.
//

import Cocoa

final class MapStartCommand: JSONCommand {
    
    private let store = TemporaryDataStore.oneTimeEditor()
    
    override class func canExecuteAPI(_ api: API) -> Bool {
        
        return api.type == .map
    }
    
    override func execute() {
        
        switch api.endpoint {
            
        case .start: startBattle()
            
        case .next:
            nextCell()
            updateBattleCell()
            
        default:
            
            Logger.shared.log("Missing API: \(apiResponse.api)")
            
            return
        }
        
        GuardShelterCommand(apiResponse: apiResponse).execute()
    }
    
    private func startBattle() {
        
        store.sync { self.store.battles().forEach(self.store.delete) }
        
        guard let deckId = parameter["api_deck_id"].int,
            let mapArea = parameter["api_maparea_id"].int,
            let mapInfo = parameter["api_mapinfo_no"].int else {
                
                Logger.shared.log("startBattle Arguments is wrong")
                
                return
        }
        
        guard let no = data["api_no"].int else {
            
            Logger.shared.log("startBattle JSON is wrong")
            
            return
        }
        
        guard let battle = store.sync(execute: { self.store.createBattle() }) else {
            
            Logger.shared.log("Can not create Battle")
            
            return
        }
        
        let kcd = ServerDataStore.default
        
        store.sync {
            
            battle.deckId = deckId
            battle.mapArea = mapArea
            battle.mapInfo = mapInfo
            battle.no = no
            battle.firstFleetShipsCount = kcd.sync { kcd.ships(byDeckId: deckId).count }
        }
    }
    
    private func nextCell() {
        
        guard let cellNumber = data["api_no"].int,
            let eventId = data["api_event_id"].int else {
                
                Logger.shared.log("updateBattleCell JSON is wrong")
                
                return
        }
        
        guard let battle = store.sync(execute: { self.store.battle() }) else {
            
            Logger.shared.log("Battle is invalid.")
            
            return
        }
        
        store.sync {
            
            battle.no = cellNumber
            battle.isBossCell = (eventId == 5)
        }
    }
    
    private func updateBattleCell() {
        
        store.sync {
            
            self.store.battle().map { $0.battleCell = nil }
        }
    }
}