/*
exportHelper.ts - ESP3D WebUI helper file

 Copyright (c) 2021 Alexandre Aussourd. All rights reserved.
 Modified by Luc LEBOSSE 2021

 This code is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This code is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with This code; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

// Navigator extension for IE10+ compatibility
interface NavigatorWithMsSave extends Navigator {
    msSaveOrOpenBlob?: (blob: Blob, filename: string) => void;
}

// Interface setting value type
interface SettingValue {
    id: string;
    name: string;
    initial: any;
    value: any;
}

// Interface settings subsection item
interface SettingsSubItem {
    id?: string;
    type?: string;
    value?: any;
    initial?: any;
}

// Interface settings section
interface InterfaceSettingsSection {
    [key: string]: {
        [subkey: string]: SettingsSubItem;
    };
}

// Complete interface settings data
export interface InterfaceSettingsData {
    settings: InterfaceSettingsSection;
    custom?: any;
    extensions?: any;
}

// Export preferences structure
export interface ExportPreferences {
    settings: { [key: string]: any };
    custom?: any;
    extensions?: any;
}

function exportPreferencesSection(
    interfaceSettingsDataSection: InterfaceSettingsSection,
    asFile: boolean = true,
    initial_value: boolean = false
): { [key: string]: any } {
    const section: { [key: string]: any } = {}
    for (let key in interfaceSettingsDataSection) {
        for (let subkey in interfaceSettingsDataSection[key]) {
            if (interfaceSettingsDataSection[key][subkey].id) {
                if (interfaceSettingsDataSection[key][subkey].type == "group") {
                    interfaceSettingsDataSection[key][subkey].value.forEach(
                        (element: SettingValue) => {
                            section[element.id] = asFile
                                ? element.initial
                                : element.value
                        }
                    )
                } else if (
                    interfaceSettingsDataSection[key][subkey].type == "list"
                ) {
                    const itemsList: any[] = []
                    interfaceSettingsDataSection[key][subkey].value.forEach(
                        (element: any) => {
                            const item: any = {}
                            item.id = element.id
                            element.value.forEach((setting: SettingValue) => {
                                item[setting.name] = asFile
                                    ? setting.initial
                                    : setting.value
                            })
                            itemsList.push(item)
                        }
                    )
                    section[
                        interfaceSettingsDataSection[key][subkey].id!
                    ] = itemsList
                } else {
                    section[
                        interfaceSettingsDataSection[key][subkey].id!
                    ] = asFile || initial_value
                        ? interfaceSettingsDataSection[key][subkey].initial
                        : interfaceSettingsDataSection[key][subkey].value
                }
            }
        }
    }
    return section
}

function exportPreferences(interfaceSettingsData: InterfaceSettingsData, asFile: boolean = true): ExportPreferences {
    console.log("exportPreferences for")
    console.log(JSON.parse(JSON.stringify(interfaceSettingsData)))
    const preferences: ExportPreferences = {
        settings: {}
    }
    const filename = "preferences.json"
    if (interfaceSettingsData.custom)
        preferences.custom = interfaceSettingsData.custom
    if (interfaceSettingsData.extensions)
        preferences.extensions = interfaceSettingsData.extensions
    preferences.settings = exportPreferencesSection(interfaceSettingsData.settings, asFile)
    if (asFile) {
        const file = new Blob([JSON.stringify(preferences, null, " ")], {
            type: "application/json",
        })
        const nav = window.navigator as NavigatorWithMsSave
        if (nav.msSaveOrOpenBlob)
            // IE10+
            nav.msSaveOrOpenBlob(file, filename)
        else {
            // Others
            const a = document.createElement("a")
            const url = URL.createObjectURL(file)
            a.href = url
            a.download = filename
            document.body.appendChild(a)
            a.click()
            setTimeout(() => {
                document.body.removeChild(a)
                window.URL.revokeObjectURL(url)
            }, 0)
        }
    }
    console.log("exportPreferences done")
    console.log(preferences)
    return preferences
}

export { exportPreferences, exportPreferencesSection }