/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

import Foundation
import Shared

/*
 * Factory methods for converting rows from SQLite into model objects
 */
extension SQLiteHistory {
    class func basicHistoryColumnFactory(_ row: SDRow) -> Site {
        let id = row["historyID"] as? Int
        let url = row["url"] as! String
        let title = row["title"] as! String
        let guid = row["guid"] as! String

        // Extract a boolean from the row if it's present.
        let iB = row["is_bookmarked"] as? Int
        let isBookmarked: Bool? = (iB == nil) ? nil : (iB! != 0)

        let site = Site(url: url, title: title, bookmarked: isBookmarked)
        site.guid = guid
        site.id = id

        // Find the most recent visit, regardless of which column it might be in.
        let local = row.getTimestamp("localVisitDate") ?? 0
        let remote = row.getTimestamp("remoteVisitDate") ?? 0
        let either = row.getTimestamp("visitDate") ?? 0

        let latest = max(local, remote, either)
        if latest > 0 {
            site.latestVisit = Visit(date: latest, type: VisitType.unknown)
        }

        return site
    }

    class func iconColumnFactory(_ row: SDRow) -> Favicon? {
        if let iconType = row["iconType"] as? Int,
            let iconURL = row["iconURL"] as? String,
            let iconDate = row["iconDate"] as? Double,
            let _ = row["iconID"] as? Int {
                let date = Date(timeIntervalSince1970: iconDate)
                return Favicon(url: iconURL, date: date, type: IconType(rawValue: iconType)!)
        }
        return nil
    }

    class func pageMetadataColumnFactory(_ row: SDRow) -> PageMetadata? {
        guard let siteURL = row["url"] as? String else {
            return nil
        }

        return PageMetadata(id: row["metadata_id"] as? Int, siteURL: siteURL, mediaURL: row["media_url"] as? String, title: row["metadata_title"] as? String, description: row["description"] as? String, type: row["type"] as? String, providerName: row["provider_name"] as? String, mediaDataURI: nil)
    }

    class func iconHistoryColumnFactory(_ row: SDRow) -> Site {
        let site = basicHistoryColumnFactory(row)
        site.icon = iconColumnFactory(row)
        return site
    }

    class func iconHistoryMetadataColumnFactory(_ row: SDRow) -> Site {
        let site = iconHistoryColumnFactory(row)
        site.metadata = pageMetadataColumnFactory(row)
        return site
    }

    class func basicHistoryMetadataColumnFactory(_ row: SDRow) -> Site {
        let site = basicHistoryColumnFactory(row)
        site.metadata = pageMetadataColumnFactory(row)
        return site
    }
}