const fs = require("fs")
const path = require("path")

var logStream = null
var logInstance = new Map()

setup()

function getDate(formated) {

    var date = new Date()

    // [Date Format] - Format de la date

    var gmonth = date.getMonth()
    var gday = date.getDate()
    var gHour = date.getHours()
    var gMinute = date.getMinutes()
    var gSecondes = date.getSeconds()


    if(date.getMonth() + 1 <= 10) {
        gmonth = "0" + (date.getMonth() + 1)
    }

    if(date.getDate() + 1 <= 10) {
        gday = "0" + date.getDate()
    }

    if(date.getHours() + 1 <= 10) {
        gHour = "0" + date.getHours()
    }

    if(date.getMinutes() + 1 <= 10) {
        gMinute = "0" + date.getMinutes()
    }

    if(date.getSeconds() + 1 <= 10) {
        gSecondes = "0" + date.getSeconds()
    }

    if(!formated) {
        return gday + "/" + gmonth +  " - " + gHour + "h"  + "-" + gMinute + "m" + "-" + gSecondes + "s" 
    } else {
        return date.getFullYear() + "-" + gmonth + "-" + gday + "-" + gHour + "h"  + "-" + gMinute + "m" + "-" + gSecondes + "s" 
        
    }

    
}



function setup() {

    if(!fs.existsSync(__dirname + path.sep + "logs" + path.sep)) { 
        fs.mkdir(__dirname + path.sep + "logs", (err) => {
            if(!err) {
               

                console.log("[Logs] - Dossier de logs crée ! !")
 
            } else {

                console.log("[Logs] -Erreur d'écriture par manque de permission ")
                console.log(err)
            }

        })
    
    }

    logStream = fs.createWriteStream(__dirname + path.sep + "logs" + path.sep + getDate(true) + ".log", {
        flags: 'a'
    });
    
  
    logStream.write("[" + require("../../package.json").name + "@"+ require("../../package.json").version + "] - [" + getDate(true) + "]" + "\n")
    logStream.write("Subsonics-Web by Raphix" + "\n")
    logStream.write("----------------------------------------------------------------" + "\n")

    process.on('uncaughtException', (err) => {
        console.error("["+ "FATAL" + "] - The application has encountered an error ! Please Restart ! #E = " + err + "\n")
        console.error(err)
        logStream.write("[" + getDate() + "] - ["+ "FATAL" + "] - The application has encountered an error ! Please Restart ! #E = " + err + "\n")
        logStream.end( "["+ "UNCAUGHT_EXCEPTION" + "]" + " - [END OF LOGS] - [" + getDate()  + ']')
        logStream.close()
         
    });
    
    
    process.on('beforeExit', (err) => {
        logStream.end( "["+ "BEFORE_EXIT" + "]" + " - [END OF LOGS] - [" + getDate(true)  + ']')
        logStream.close()
         
    });

    
 
}

module.exports.getInstance = function (name) {

    if(logInstance.has(name)) {

        return logInstance.get(name)

    } else {

        var logtext = "[Logs] - [ERROR] - '" + name +  "' n'est pas enregistré en tant qu'instance de log !"
        logStream.write("[" + getDate() + "] - " + logtext + "\n")
        console.log(logtext)

        return null
    }

}

module.exports.LogType = class {

    constructor(typeName) {
        this.type = typeName;
        this.steps = new Map()
        this.step = this.initializeStep()
        logInstance.set(typeName, this)
    }

    log(txt) {

       
        
        var logtext = "[" + this.type + "] - [INFO] - " + txt
        logStream.write("[" + getDate() + "] - " + logtext + "\n")
        console.log(logtext)
        
    
    }

    warn(txt) {
        
        var logtext = "[" + this.type + "] - [WARN] - " + txt
        logStream.write("[" + getDate() + "] - " + logtext + "\n")
        console.log(logtext)
        
    }

    error(txt) {


        var logtext = "[" + this.type + "] - [ERROR] - " + txt
        logStream.write("[" + getDate() + "] - " + logtext + "\n")
        console.log(logtext)
    
    
       
    }


    

    initializeStep() {
        const parent = this;
        return { 
            init: function(id, desc) {
                parent.steps.set(id, desc)
                var logtext = "[" + parent.type + "] - [INFO] - [STEP] - " + desc + " - En cours ..."
                logStream.write("[" + getDate() + "] - " + logtext + "\n")
                console.log(logtext)
            
            },
            end: function(id) {
                
                if(parent.steps.has(id)) {
                    
                    var logtext = "[" + parent.type + "] - [INFO] - [STEP] - " + parent.steps.get(id) + " - Terminé !"
                    logStream.write("[" + getDate() + "] - " + logtext + "\n")
                    console.log(logtext)
                    parent.steps.delete(id)
                } else {
                    
                    var logtext = "[" + parent.type + "] - [WARN] - [STEP] - '" + id +  "' n'est pas enregistré en tant qu'étape !"
                    logStream.write("[" + getDate() + "] - " + logtext + "\n")
                    console.log(logtext)

                }
            
            },
            error: function(id, errorDesc) {

                if(parent.steps.has(id)) {
                   
                    var logtext = "[" + parent.type + "] - [ERROR] - [STEP] - " + parent.steps.get(id) + " - Une erreur a été rencontré dans l'étape ! : #E = " + errorDesc
                    logStream.write("[" + getDate() + "] - " + logtext + "\n")
                    console.log(logtext)
                    parent.steps.delete(id)
                } else {
                    
                    var logtext = "[" + parent.type + "] - [WARN] - [STEP] - '" + id +  "' n'est pas enregistré en tant qu'étape !"
                    logStream.write("[" + getDate() + "] - " + logtext + "\n")
                    console.log(logtext)

                }

            }
        }
    
    }

}