//
//  ServerDatabase.swift
//  CapCollector
//
//  Created by Christoph on 27.04.20.
//  Copyright © 2020 CH. All rights reserved.
//

import Foundation
import SQLite

final class ServerDatabase {
    
    let db: Connection
    
    var table: Table {
        Table("caps")
    }
    
    let rowId = Expression<Int>("id")
    
    let rowName = Expression<String>("name")
    
    let rowCount = Expression<Int>("count")
    
    init?(downloadedTo url: URL) {
        guard let db = try? Connection(url.path) else {
            return nil
        }
        self.db = db
        log("Server database loaded with \(capCount) caps")
    }
    
    /// The number of caps currently in the database
    var capCount: Int {
        (try? db.scalar(table.count)) ?? 0
    }
    
    var caps: [(id: Int, count: Int, name: String)] {
        guard let rows = try? db.prepare(table) else {
            return []
        }
        return rows.map { ($0[rowId], $0[rowCount], $0[rowName]) }
    }
}

extension ServerDatabase: Logger { }