//
//  Downloader.swift
//  TournamentStats
//
//  Created by Laurent Morvillier on 02/10/2021.
//  Copyright © 2021 Stax River. All rights reserved.
//

import Foundation
import RealmSwift

class Downloader {
    
    struct TS {
        var id: String
        var date: String
    }
    
    static func downloadWSOPResults() {
        
        let infos: [TS] = [
            TS(id: "19728", date: "02/10/2021"),
            TS(id: "19729", date: "03/10/2021"),
            TS(id: "19730", date: "02/10/2021"),
            TS(id: "19732", date: "04/10/2021"),
            TS(id: "19733", date: "05/10/2021"),
            TS(id: "19731", date: "06/10/2021"),
            TS(id: "19734", date: "06/10/2021"),
            TS(id: "19926", date: "06/10/2021"),
            TS(id: "19927", date: "06/10/2021"),
            TS(id: "19737", date: "06/10/2021"),
            TS(id: "19735", date: "07/10/2021"),
            TS(id: "19736", date: "08/10/2021"),
            TS(id: "19738", date: "08/10/2021"),
            TS(id: "19739", date: "08/10/2021"),
            TS(id: "19740", date: "09/10/2021"),
            TS(id: "19741", date: "09/10/2021"),
            TS(id: "19742", date: "11/10/2021"),
            TS(id: "19743", date: "11/10/2021"),
            TS(id: "19745", date: "12/10/2021"),
            TS(id: "19747", date: "12/10/2021"),
            TS(id: "19748", date: "12/10/2021"),
            TS(id: "19749", date: "13/10/2021"),
            TS(id: "19744", date: "14/10/2021"),
            TS(id: "19751", date: "14/10/2021"),
            TS(id: "19752", date: "14/10/2021"),
            TS(id: "19750", date: "15/10/2021"),
            TS(id: "19754", date: "15/10/2021"),
            TS(id: "19753", date: "16/10/2021"),
            TS(id: "19755", date: "16/10/2021"),
            TS(id: "19756", date: "17/10/2021"),
            TS(id: "19757", date: "17/10/2021"),
            TS(id: "19759", date: "17/10/2021"),
            TS(id: "19761", date: "19/10/2021"),
            TS(id: "19762", date: "19/10/2021"),
            TS(id: "19758", date: "20/10/2021"),
            TS(id: "19763", date: "20/10/2021"),
            TS(id: "19764", date: "20/10/2021"),
            TS(id: "19765", date: "21/10/2021"),
            TS(id: "19766", date: "21/10/2021"),

]
        
        for info in infos {
            sleep(1)
            downloadWSOPResults(tournamentInfo: info)
        }
        
//        for i in 19728...19732 {
//            DispatchQueue.global(qos: .utility).async {
//
//                downloadWSOPResults(tournamentId: "\(i)")
//
//            }
//        }
        
    }
    
    fileprivate static func downloadWSOPResults(tournamentInfo: TS) {

        print("Importing tournament \(tournamentInfo.id)")
        
        guard let url = URL(string: "https://www.wsop.com/tournaments/results/?aid=2&grid=4865&tid=\(tournamentInfo.id)&rr=5") else {
            return
        }
        let realm = try! Realm()
        do {
            try realm.write {
                self.downloadWSOPResults(url: url, date: tournamentInfo.date)
            }
        } catch {
            print("error = \(error)")
        }

    }
    
    fileprivate static func downloadWSOPResults(url: URL, date: String, currentTournament: Tournament? = nil) {
        
        let realm = try! Realm()
        
        let nf = NumberFormatter()
        nf.numberStyle = .decimal
        nf.locale = Locale.init(identifier: "en_US")
        nf.groupingSeparator = ","
        
        do {
            let string = try String(contentsOf: url)
            
            let infos = string.slice(from: "<div id=\"eventinfo\">", to: "<div class='eventinfo-reports'>")
            ?? string.slice(from: "<div id=\"eventinfo\">", to: "eventinfo-progress")
            ?? string.slice(from: "<div id=\"eventinfo\">", to: "eventstats")
            
            if let infos = infos {
                
                var tournament: Tournament? = currentTournament
                
                if tournament == nil {
                    let tour = realm.create(Tournament.self)
                    tournament = tour
                    
                    if let name = infos.slice(from: "<h1>", to: "</h1>") {
                        tour.name = name
                        tour.date = Formatter.basicDate.date(from: date) ?? Date()
                        
                        if let strNumber = name.slice(from: "Event #", to: ":"), let number = nf.number(from: strNumber) {
                            tour.number = number.intValue
                        }
                        
                        if name.contains("6-Handed") {
                            tour.tableSize = 6
                        } else if name.contains("8-Handed") {
                            tour.tableSize = 8
                        } else if name.contains("Heads-Up") {
                            tour.tableSize = 2
                        }
                        
                    } else {
                        print("no name = \(infos)")
                    }
                    
                    if let stats = string.slice(from: "<ul id=\"eventstats\">", to: "<div id=\"nav-tabs\">") {
                        
                        if let strBuyin = stats.slice(from: "Buy-in:</b> &#36;", to: "</li>"), let buyin = nf.number(from: strBuyin) {
                            tour.buyin = buyin.intValue
                        } else {
                            print("no buyin = \(stats)")
                        }
                        
                        if let strprizepool = stats.slice(from: "Prizepool:</b> &#36;", to: " </li>"), let pp = nf.number(from: strprizepool) {
                            tour.prizepool = pp.doubleValue
                        } else {
                            print("no prizepool = \(stats)")
                        }
                        
                        if let strentries = stats.slice(from: "Entries:</b> ", to: " </li>"), let entries = nf.number(from: strentries) {
                            tour.entries = entries.intValue
                        } else {
                            print("no entries = \(stats)")
                        }
                    }
                    
                }
                
                if let strresultsblock = string.slice(from: "Country</li>", to: "<div id=\"PagingNav\"") {
                    let strresults =  strresultsblock.components(separatedBy: "<li class='place")
                    
                    print("Results count = \(strresults.count)")
                    
                    for strresult in strresults {
                        
                        let cells = strresult.components(separatedBy: "<li")
                        if !(cells.count == 6 || cells.count == 7) {
                            print("cell count = \(cells.count)")
                            continue
                        }
                        
                        let hasPOY = cells.count == 7
                        
                        var rank: Int? = nil
                        var name: String? = nil
                        var earnings: Double? = nil
                        var city: String? = nil
                        var state: String? = nil
                        var country: String? = nil
                        var poy: Double? = nil
                        
                        if let strrank = cells[0].slice(from: ">", to: "<") {
                            rank = nf.number(from: strrank)?.intValue
                        }
                        
                        if let nameraw = cells[1].components(separatedBy: "'>").last {
                            name = nameraw.replacingOccurrences(of: "</a></li>", with: "")
                        }
                        
                        if let earningsraw = cells[2].components(separatedBy: "&#36;").last {
                            let strearnings = earningsraw.replacingOccurrences(of: "</li>", with: "")
                            earnings = nf.number(from: strearnings)?.doubleValue
                        }
                        
                        if hasPOY, let poyraw = cells[3].components(separatedBy: "\'>").last {
                            let strpoy = poyraw.replacingOccurrences(of: "</li>", with: "")
                            poy = nf.number(from: strpoy)?.doubleValue
                        }
                        
                        let cityIndex = hasPOY ? 4 : 3
                        if let cityraw = cells[cityIndex].components(separatedBy: "\'>").last {
                            city = cityraw.replacingOccurrences(of: "</li>", with: "")
                        }
                        
                        let stateIndex = hasPOY ? 5 : 4
                        if let stateraw
                            = cells[stateIndex].components(separatedBy: "\'>").last {
                            state = stateraw.replacingOccurrences(of: "</li>", with: "")
                        }
                        let countryIndex = hasPOY ? 6 : 5
                        if let countryraw
                            = cells[countryIndex].components(separatedBy: "\'>").last {
                            country = String(countryraw.prefix(2))
                        }
                        
                        guard let rank = rank, let name = name, let earnings = earnings else {
                            print("Missing data: R: \(rank), N: \(name), E: \(earnings)")
                            continue
                        }
                        
                        let player = realm.getOrCreatePlayer(name: name, city: city ?? "", state: state ?? "", country: country ?? "")
                        
                        let result = realm.create(Result.self)
                        result.player = player
                        result.earnings = earnings
                        result.rank = rank
                        
                        tournament?.results.append(result)
                        
                    }
                    
                    if currentTournament == nil, let paging = string.slice(from: "<div id=\"PagingNav\"", to: "<div class=\"banner\">") {
                        
                        let pages = paging.components(separatedBy: "<a href='")
                        if pages.count > 2 {
                            for i in 2..<pages.count { // don't do page 1 again
                                let components = pages[i].components(separatedBy: "'")
                                if let urlString = components.first,
                                   let url = URL(string:  "https://www.wsop.com\(urlString)") {
                                    self.downloadWSOPResults(url: url, date: date, currentTournament: tournament)
                                }
                            }
                        }
                        
                    }
                    
                } else {
                    print("Bad page strresultsblock")
                }
            } else {
                print("Missing name block")
            }
            
        } catch {
            print(error)
        }
        
    }
    
}