//  This file is part of Friendiqa
//  https://git.friendi.ca/lubuwest/Friendiqa
//  Copyright (C) 2020 Marco R. <thomasschmidt45@gmx.net>
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  In addition, as a special exception, the copyright holders give
//  permission to link the code of portions of this program with the
//  OpenSSL library under certain conditions as described in each
//  individual source file, and distribute linked combinations including
//  the two.
//
//  You must obey the GNU General Public License in all respects for all
//  of the code used other than OpenSSL. If you modify file(s) with this
//  exception, you may extend this exception to your version of the
//  file(s), but you are not obligated to do so. If you do not wish to do
//  so, delete this exception statement from your version. If you delete
//  this exception statement from all source files in the program, then
//  also delete it here.
//
//  This program 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 General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.

import QtQuick 2.7
import QtQuick.Dialogs 1.2
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.12
import QtQml.Models 2.15
import "qrc:/js/service.js" as Service
import "qrc:/js/helper.js" as Helperjs
import "qrc:/qml/configqml"
import "qrc:/qml/genericqml"

Page{
    id:accountPage
    width: root.width
    height: root.height
    property var users:[]
    property var userdata: ({})
    property string imagestoredir: ""
    property var appdata: ({})

    function setServericon(server){
        if ((server!=null) && (server!="")){
            xhr.setUrl(server);
            xhr.setApi("/api/statusnet/config");
            xhr.clearParams();
            xhr.get();
        }
     }

    function verify(userconfig){
        Helperjs.friendicaRequest(userconfig,"/api/v1/accounts/verify_credentials",root,function(obj){
        accountBusy.running=false;
        try{var credentials=JSON.parse(obj);
            if (credentials.hasOwnProperty('error')){
                Helperjs.showMessage(qsTr("Error"),qsTr("Wrong password or 2FA enabled!"),root)
            }
            else{
                if (users.length==0){Service.setDefaultOptions(db);}
                if (userconfig.APIVersion!=""){userconfig.password=""}
                if (imagestoredir==""){imagestoredir=filesystem.homePath+"/"+credentials.username+"/";
                    userconfig.imagestore=imagestoredir}
                if(userconfig.imagestore == filesystem.homePath+"/"+username.text+"/")
                    {filesystem.makePath(filesystem.homePath+"/"+username.text);}
                filesystem.Directory=imagestoredir;
                filesystem.makeDir("contacts");
                filesystem.makeDir("albums");
                userconfig.accountId=credentials.id;
                userconfig.username=credentials.username;
                Service.storeConfig(db,userconfig);
                Service.readConfig(db,function(userconfig){
                    Helperjs.readData(db,"config","",function(storedUsers){
                       storedUsers.sort(function(obj1, obj2) {
                           return obj1.isActive - obj2.isActive;
                       });
                    accountPage.users=storedUsers});
                     //reset values
                    login=userconfig;
                    news=[];
                    contactlist=[];
                    rootstack.currentIndex=0;
                    newstypeSignal("refresh");
                },"isActive",0);
                Helperjs.showMessage(qsTr("Success"),qsTr("Name")+": "+credentials.display_name+"\nScreen Name: "+credentials.username,root)
                rootstackView.pop()
             }
        }catch(e){Helperjs.showMessage(qsTr("Error"),qsTr("Wrong password or 2FA enabled!"),root)};
    })}

    MButton{
        id:userButton
        text:qsTr("User")
        font.pointSize: osSettings.bigFontSize
        x: root.fontFactor*osSettings.bigFontSize
        y: root.fontFactor*osSettings.bigFontSize
        width: root.width/2 - 2*mm
        height: 2*root.fontFactor*osSettings.bigFontSize
        visible: users.length>0
        onClicked:{
            var useritems="";
            for (var i=0;i<accountPage.users.length;i++){
                useritems=useritems+"MenuItem{font.pointSize: osSettings.bigFontSize;width:accountPage.width*2/3; text:'"+accountPage.users[i].username+
                "'; onTriggered: {Service.readConfig(db,function(obj){
                userButton.text=obj.username;
                servername.text=obj.server;
                serverModel.insert(0,{text:obj.server})
                accountPage.setServericon(obj.server);
                username.text= obj.username;
                password.text=Qt.atob(obj.password);
                imagestore.text=obj.imagestore;
                imagestoredir=obj.imagestore;
                if( obj.isActive==0){userButton.font.bold='true'} else {userButton.font.bold='false'}
                if(obj.password!=''){accountPage.state='password'}
                else if (obj.token!=''){accountPage.state='oauth'}
                },'username','"+ accountPage.users[i].username+"')}}"
            }
            var menuString="import QtQuick.Controls 2.12;import 'qrc:/js/service.js' as Service;"+
                " Menu {width:8*root.fontFactor*osSettings.bigFontSize;"+useritems+"}";
            var userlistObject=Qt.createQmlObject(menuString,accountPage,"usermenuOutput")
            userlistObject.popup()  }
    }

    Image{
        id:servericon
        x:root.fontFactor*osSettings.bigFontSize;y:3*root.fontFactor*osSettings.bigFontSize
        width:2.5*root.fontFactor*osSettings.bigFontSize; height: 2.5*root.fontFactor*osSettings.bigFontSize
        visible: false
        source:""
        property var serverconfig:({})
        MouseArea{
            anchors.fill:parent
            onClicked:{
                let serverConfigString="import QtQuick 2.0; import QtQuick.Dialogs 1.2; MessageDialog{ visible: true; title:'Server';standardButtons: StandardButton.Ok;text: 'Name: "+
                    servericon.serverconfig.site.name+"\nLanguage: "+servericon.serverconfig.site.language+
                    "\nEmail: "+servericon.serverconfig.site.email+"\nTimezone: "+servericon.serverconfig.site.timezone+"\nClosed: "+servericon.serverconfig.site.closed+
                    "\nText limit: "+servericon.serverconfig.site.textlimit+"\nShort Url length: "+servericon.serverconfig.site.shorturllength+
                    "\nFriendica version: "+servericon.serverconfig.site.friendica.FRIENDICA_VERSION+
                    "\nDB Update version: "+servericon.serverconfig.site.friendica.DB_UPDATE_VERSION+"'}";

                var serverconfigObject=Qt.createQmlObject(serverConfigString,accountPage,"serverconfigOutput");
            }
        }
    }
    FontLoader{id: fontAwesome; source: "qrc:/images/fontawesome-webfont.ttf"}
    MButton{
        id:serverSearchButton
        text:"\uf002"
        icon.name: "search"
        font.pointSize: osSettings.bigFontSize
        x:root.fontFactor*osSettings.bigFontSize
        y:3*root.fontFactor*osSettings.bigFontSize
        width: 2*root.fontFactor*osSettings.bigFontSize; height:2*root.fontFactor*osSettings.bigFontSize
        visible: servericon.visible?false:true
        onClicked:{Qt.openUrlExternally(Qt.resolvedUrl("https://dir.friendica.social/servers"))}
    }

//    ComboBox{
//        id: servername
//        x: 4*root.fontFactor*osSettings.bigFontSize
//        y: 3.5*root.fontFactor*osSettings.bigFontSize
//        width: root.width-5*root.fontFactor*osSettings.bigFontSize
//        height: 2.5*root.fontFactor*osSettings.bigFontSize//5*mm;
//        font.pointSize: osSettings.systemFontSize
//        editable:true
//        model: serverModel
//        onAccepted: {
//            let cleanText =currentText;if(currentText==""){cleanText=editText}
//            if((cleanText).substring(0,8) !=="https://"){
//                cleanText="https://"+cleanText
//            }
//            if (find(cleanText) === -1) {
//                serverModel.append({text: cleanText})
//                currentIndex = find(cleanText)
//                displayText=cleanText
//            }
//            if (cleanText!=""){accountPage.setServericon(cleanText)}
//        }
//        onFocusChanged: {
//            if(focus==false){
//                    onAccepted()
//            }
//        }
//    }
    TextField {
        id: servername
        x: 4*root.fontFactor*osSettings.bigFontSize
        y: 3.5*root.fontFactor*osSettings.bigFontSize
        width: root.width-5*root.fontFactor*osSettings.bigFontSize
        height: 2.5*root.fontFactor*osSettings.bigFontSize
        font.pointSize: osSettings.systemFontSize
        text:"https://"
        onFocusChanged:{
             if (focus){servermenu.open()}
             else{
                 if((servername.text).substring(0,11) =="https://http"){
                     servername.text= (servername.text).substring(8)
                 }
                 if (servername.text!="https://"){
                     accountPage.setServericon(servername.text)}
                 }
         }
    }
    Menu {
        id:servermenu
        width: 13*root.fontFactor*osSettings.bigFontSize
        x: 4*root.fontFactor*osSettings.bigFontSize
        y: 5*root.fontFactor*osSettings.bigFontSize
        Instantiator{
            model:serverModel
            MenuItem{
                text: modelData
                onTriggered: {servername.text=modelData}
            }
            onObjectAdded: servermenu.insertItem(index,object)
            onObjectRemoved: servermenu.removeItem(object)
        }
    }

    ListModel{id:serverModel
        ListElement{text:"https://anonsys.net"}
        ListElement{text:"https://asaps-sm.lafayettegroup.com"}
        ListElement{text:"https://f.freinetz.ch"}
        ListElement{text:"https://friendica.chilemasto.casa"}
        ListElement{text:"https://friendica.eskimo.com"}
        ListElement{text:"https://friendica.me"}
        ListElement{text:"https://friendica.opensocial.space"}
        ListElement{text:"https://friendica.utzer.de"}
        ListElement{text:"https://friendica.vrije-mens.org"}
        ListElement{text:"https://libranet.de"}
        ListElement{text:"https://loma.ml"}
        ListElement{text:"https://nerdica.net"}
        ListElement{text:"https://nsfw.wnymathguy.com"}
        ListElement{text:"https://opensocial.at"}
        ListElement{text:"https://poliverso.org"}
        ListElement{text:"https://social.isurf.ca"}
        ListElement{text:"https://social.trom.tf"}
        ListElement{text:"https://squeet.me"}
        ListElement{text:"https://venera.social"}
    }

    MButton {
        id: ruleButton
        x: root.fontFactor*osSettings.bigFontSize; y: 6*root.fontFactor*osSettings.bigFontSize; width: root.width-9*mm;
        visible: (osSettings.osType=="Android") && (userButton.text== qsTr("User"))
        height: 2*root.fontFactor*osSettings.bigFontSize;
        text: qsTr("Instance rules")
        font.pointSize: osSettings.bigFontSize
        onClicked:{
            xhr.setUrl(servername.text);
            xhr.setApi("/api/v1/instance/rules");
            xhr.clearParams();
            xhr.get();
        }
    }

    TextField {
        id: username
        x: root.fontFactor*osSettings.bigFontSize; y: 6*root.fontFactor*osSettings.bigFontSize; width: root.width-9*mm; //height: 5*mm;
        font.pointSize: osSettings.systemFontSize
        visible: (osSettings.osType=="Android")?(userButton.text!= qsTr("User")):true
        placeholderText: qsTr("Nickname")
        selectByMouse: true
        onEditingFinished: {
             if (username.text.indexOf('@')>-1){
                    Helperjs.showMessage(qsTr("Error"),qsTr("Nicknames containing @ symbol currently not supported"),accountPage)
              }
              imagestoredir=filesystem.homePath+"/"+username.text+"/"
                    //if (imagestore.text==filesystem.homePath+"/.friendiqa/"){imagestore.text=filesystem.homePath+"/.friendiqa/"+username.text+"/"}
        }
     }

    TextField {
        id: password
        x: root.fontFactor*osSettings.bigFontSize; y: 9*root.fontFactor*osSettings.bigFontSize; width: root.width-9*mm; //height: 5*mm;
        font.pointSize: osSettings.systemFontSize
        visible: (osSettings.osType=="Android")?(userButton.text!= qsTr("User")):true
        selectByMouse: true
        echoMode: TextInput.Password
        placeholderText: qsTr("Password")
        inputMethodHints: Qt.ImhNoAutoUppercase | Qt.ImhNoPredictiveText | Qt.ImhSensitiveData
   }

    Label {
        id: imagedirlabel
        visible: imagestore.text!=""
        text: qsTr("Image dir.")
        font.pointSize: osSettings.systemFontSize
        x: root.fontFactor*osSettings.bigFontSize; y: 12*root.fontFactor*osSettings.bigFontSize
     }

    TextField {
        id: imagestore
        x: root.fontFactor*osSettings.bigFontSize; y: 13*root.fontFactor*osSettings.bigFontSize; width: root.width-17*mm; //height: 5*mm;
        visible:imagestore.text!=""
        font.pointSize: osSettings.systemFontSize
        selectByMouse: true
        text: "" //filesystem.homePath+"/.friendiqa/"+username.text+"/" //(osSettings.osType=="Android") && (filesystem.fileexist("/storage/emulated/0/Pictures/"))?"/storage/emulated/0/Pictures/":""
        wrapMode: TextEdit.NoWrap
        onTextChanged: imagestoredir=imagestore.text
     }

    MButton {
           x: root.width-3*root.fontFactor*osSettings.bigFontSize; y: 13*root.fontFactor*osSettings.bigFontSize;
           height: 2*root.fontFactor*osSettings.bigFontSize;
           visible:imagestore.text!=""
           text: "..."
           font.pointSize: osSettings.bigFontSize
           onClicked:{imagestoreDialog.open()}
    }

    FileDialog {
        id: imagestoreDialog
        title: "Please choose a directory"
        folder: shortcuts.pictures
        selectFolder: true
        onAccepted: {
            var imagestoreString=imagestoreDialog.folder.toString();
            imagestoreString=imagestoreString.replace(/^(file:\/{2})/,"")+"/"
            imagestore.text=imagestoreString
        }
    }

    BusyIndicator{
        id: accountBusy
         anchors.horizontalCenter: parent.horizontalCenter
         y: 16*root.fontFactor*osSettings.bigFontSize
         width:10*mm
         height: 10*mm
         running: false
    }

    MButton {
        id:confirmationOAuth
        x: root.fontFactor*osSettings.bigFontSize; y: 16*root.fontFactor*osSettings.bigFontSize
        text: qsTr("Connect")
        font.pointSize: osSettings.bigFontSize
        visible: (osSettings.osType=="Android")?userButton.text!= qsTr("User"):true
        onClicked:{
            if (servername.text==""){Helperjs.showMessage(qsTr("Error"), qsTr("No server given!"),root)}
            else{
                xhr.setUrl(servername.text);
                xhr.setApi("/api/v1/apps");
                xhr.clearParams();
                if (osSettings.osType=="Android"){
                    xhr.setParam("client_name","Friendiqa-Android");
                } else {
                    xhr.setParam("client_name","Friendiqa-"+filesystem.hostname);
                }
                xhr.setParam("redirect_uris","http://127.0.0.1:1337/");
                xhr.setParam("scopes","read write follow push");
                xhr.setParam("website","https://friendiqa.ma-nic.de");
                xhr.post();
            }
        }
    }

    Connections{
        target: xhr
        function onSuccess(text,api){
            if(api=="/api/v1/instance/rules"){
                let rulestext="";
                let rulesarray=JSON.parse(text)
                for (let rule in rulesarray){
                    rulestext=rulestext+rulesarray[rule].text+"\n"
                }
                var component = Qt.createComponent("qrc:/qml/configqml/AcceptRules.qml");
                var rulesdialog = component.createObject(root,{"rules": rulestext});
                rulesdialog.open();
            }
            else if(api=="/api/statusnet/config"){
                try{let serverdata = JSON.parse(text);
                servericon.visible=true;
                servericon.source=serverdata.site.logo;
                servericon.serverconfig=serverdata;
                }
                catch(e){print(e)}
            }

            else if (api=="/api/v1/apps"){
                let app=JSON.parse(text);
                accountPage.appdata=app;
                oauth2.setClientId(app.client_id);
                oauth2.setClientSecret(app.client_secret);
                oauth2.setServer(servername.text);
                oauth2.grant();
            }
        }
        function onError(text,api){
            print(api + " Error "+ text)
        }
    }

    Connections{
        target: oauth2
        function onSuccess(text){
            var userconfig={server: servername.displayText, username:"", password:"", imagestore: imagestoredir,interval:"",token: text,client:Qt.btoa(JSON.stringify(appdata))}
            verify(userconfig)
        }
        function onError(text){
            Helperjs.showMessage(qsTr("Error"), qsTr("Couldn't connect to server"),root)
            print ("oauth2 onerror "+text)
        }
    }

    MButton {
        id:confirmation
        x: root.fontFactor*osSettings.bigFontSize; y: 16*root.fontFactor*osSettings.bigFontSize
        text: qsTr("Confirm")
        font.pointSize: osSettings.bigFontSize
        visible: false// (osSettings.osType=="Android")?userButton.text!= qsTr("User"):true
        onClicked:{
            accountBusy.running=true;
            var userconfig={server: servername.displayText, username: username.text, password:Qt.btoa(password.text), imagestore:imagestoredir,interval:""};
            var errormessage="";
            if (servername.text==""){errormessage=qsTr("No server given! ")}
            else if (username.text==""){errormessage+=qsTr("No nickname given! ")}
            else if (password.text=="") {errormessage+=qsTr("No password given! ")}
            else if (imagestoredir=="") {errormessage+=qsTr("No image directory given!")}
            else {errormessage=""}
            if (errormessage=="") {verify(userconfig)}
            else {Helperjs.showMessage(qsTr("Error"), errormessage,root)}
    }}

    MButton {
        id: setDefault
        x: 10*root.fontFactor*osSettings.bigFontSize; y: 16*root.fontFactor*osSettings.bigFontSize
        text: qsTr("Set as default")
        font.pointSize: osSettings.bigFontSize
        visible: false
        onClicked:{
            accountBusy.running=true;
            let users=updatenews.getAccounts("username",username.text)
            Service.storeConfig(db,users[0]);
            Service.readConfig(db,function(userconfig){
                 //reset values
                login=userconfig;
                news=[];
                contactlist=[];
                rootstack.currentIndex=0;
                newstypeSignal("refresh");
            },"isActive",0);
            Helperjs.showMessage(qsTr("Success"),"Screen Name: "+users[0].username,root)
            rootstackView.pop()
    }}

    Row{
        spacing:0.5*mm
        anchors.top: parent.top
        anchors.topMargin: root.fontFactor*osSettings.bigFontSize
        anchors.right: parent.right
        anchors.rightMargin: 1*mm
        MButton {
            width: 5*mm;
            visible: users.length>0
            text: "-"
            font.pointSize: osSettings.bigFontSize
            onClicked:{
                var userconfig={server: servername.text, username: username.text, password: Qt.btoa(password.text)};

                Service.readConfig(db,function(user){
                    if(userdata.token!=""){xhr.setUrl(servername.text);
                        xhr.setApi("/oauth/revoke");
                        xhr.clearParams();
                        xhr.setParam("client_id",user.client.client_id);
                        xhr.setParam("client_secret",user.client.client_secret);
                        xhr.setParam("token",user.token);
                        xhr.post();
                    }
                },"username",username.text);


                Service.deleteConfig(db,userconfig,function(){
                    filesystem.Directory=imagestore.text+"contacts";
                    filesystem.rmDir();
                    filesystem.Directory=imagestore.text+"albums";
                    filesystem.rmDir();
                    servername.text="https://";
                    servericon.visible=false;
                    servericon.source="";
                    username.text="";
                    password.text="";
                    imagestore.text="";
                    userButton.text=qsTr("User");
                    Helperjs.readData(db,"config","",function(storedUsers){
                        storedUsers.sort(function(obj1, obj2) {
                            return obj1.isActive - obj2.isActive;
                     })
                     accountPage.users=storedUsers;})
                    accountPage.state="new_oauth"
               })
            }}

        MButton {
            width: 5*mm;
            visible: users.length>0
            text: "+"
            font.pointSize: osSettings.bigFontSize
            onClicked:{
                servername.text="https://"
                servericon.visible=false;
                servericon.source="";
                username.text=""
                password.text=""
                imagestore.text=""
                userButton.text=qsTr("User")
                accountPage.state="new_oauth"
               }
         }

        MButton {
            width: 5*mm;
            text: "?"
            font.pointSize: osSettings.bigFontSize
            onClicked:{
                rootstackView.push("qrc:/qml/configqml/InfoBox.qml");
            }
        }
        MButton{
            id:closeButton
            width: 5*mm;
            visible: users.length>0
            text:   "\uf057"
            font.pointSize: osSettings.bigFontSize
            onClicked:{rootstackView.pop()}
        }
    }

    states: [
        State {
            name: "new_oauth"
            PropertyChanges { target: username; visible: false }
            PropertyChanges { target: password; visible: false}
            PropertyChanges { target: ruleButton; visible: true}
            },
        State {
            name:"oauth"
            PropertyChanges {target: username; visible: true}
            PropertyChanges { target: password; visible: false}
            PropertyChanges {target: confirmationOAuth; visible: true}
            PropertyChanges {target: setDefault; visible: true}
            PropertyChanges { target: confirmation; visible: false}
        },
        State{
            name:"password"
            PropertyChanges { target: username; visible: true }
            PropertyChanges { target: password; visible: true}
            PropertyChanges { target: confirmation; visible: true}
            PropertyChanges {target: confirmationOAuth; visible: false}
        }
    ]

   Component.onCompleted: { //print("filesystem.osType " +filesystem.osType)
       try{Helperjs.readData(db,"config","",function(storedUsers){
          storedUsers.sort(function(obj1, obj2) {
              return obj1.isActive - obj2.isActive;
          })
          accountPage.users=storedUsers;
          Service.readConfig(db,function(obj){
            userButton.text=obj.username;
            servername.text=obj.server;
            serverModel.insert(0,{text:obj.server})
            accountPage.setServericon(obj.server);
            username.text= obj.username;
            password.text=Qt.atob(obj.password);
            imagestore.text=obj.imagestore;
            imagestoredir=obj.imagestore;
            if( obj.isActive==0){userButton.font.bold='true'} else {userButton.font.bold='false'}
            if(obj.password!=""){accountPage.state="password"}
            else if (obj.token!=""){accountPage.state="oauth"}
            else {accountPage.state="new_oauth"}
          },"isActive",0)
        })}
        catch (e){//print("onCompleted" +users.count +e)
      }
    }
}