//
//  ChipCountParser.swift
//  TournamentStats
//
//  Created by Laurent Morvillier on 27/06/2019.
//  Copyright © 2019 Stax River. All rights reserved.
//

import Foundation
import RealmSwift
import Realm

enum ChipCountColumns : CaseIterable {
    case rank
    case player
    case chipcount
    case trend
    case city
    case state
    case country
}

class ChipCountParser {
    
    static func start() -> ChipCountManager {
        
        let realm = try! Realm()
        
        var ccm = ChipCountManager(chipCounts: [], totalChips: 0.0)
        
        try! realm.write {
            
            let resourceName = "chipcount"
            let path: String? = Bundle.main.path(forResource: resourceName, ofType: "")
            if let path = path {
                do {
                    let data = try String(contentsOfFile: path, encoding: .utf8)
                    ccm = ChipCountParser.parse(realm: realm, data: data)
                } catch {
                    print(error)
                }
            } else {
                print("could not find path for chipcount")
            }
            
        }
        return ccm
    }
    
    static func parse(realm: Realm, data: String) -> ChipCountManager {
        
        // cleanup raw data
        let rawRows = data.split(separator: "\n")
        var rows = rawRows.map { String($0) }
        rows = rows.filter { !$0.isEmpty }
        
        let columns = ChipCountColumns.allCases
        let numberOfColumns = columns.count
        
        let formatter = Formatter.importData
        
        var playerName: String = ""
        var totalChips: Double = 0.0
        var ccs: [ChipCount] = []
        
        for i in 0..<rows.count {
            let row: String = rows[i]
            
            let index = i % numberOfColumns
            let currentColumn = columns[index]
            
            switch currentColumn {
            case .rank:
                break
            case .player:
                playerName = row
            case .chipcount:
                let chips = formatter.number(from: row)?.doubleValue ?? 0.0
                totalChips += chips
                
                let cc = ChipCount(player: playerName, chips: chips)
                ccs.append(cc)
            case .trend:
                break
            case .city:
                break
            case .state:
                break
            case .country:
                break
            }
            
        }
        return ChipCountManager(chipCounts: ccs, totalChips: totalChips)
    }
    
}