import { Utils } from './helpers/utils.js'
export class P42ApiEndpoints{
    constructor(app, db) {
        this.db = db
        this.app = app
        this.userinfos = null
        this.utils = new Utils()
        this.registerPaths()
        setInterval(() => {
            this.db.query('SELECT 1');
        }, 5000);
    }

    registerPaths(){
        this.app.get('/hw', this.hw.bind(this))
        this.app.get('/checkauth', this.checkauth.bind(this))
        this.app.post('/login', this.login.bind(this))
        
    }

    err(req, res, msg, debug, status=500) {
        if(!debug) debug = msg
        let jsonResp = {'success':false,
                        'payload': null,
                        'error': {
                            'displayMessage' : msg,
                            'debugMessage' : debug
                        } 
                    };
        res.set('Content-Type', 'application/json');
        res.status(status)
        res.send(JSON.stringify(jsonResp));
    }

    ok(req, res, payload) {
        let jsonResp = {    "success": true,
                            "payload": payload,
                        };
        res.set('Content-Type', 'application/json');
        res.send(JSON.stringify(jsonResp));
    }


    async makeSession(req, res) {
        req.session.userinfo =  req.body
        console.log('REQ body:', req.body)
        this.ok(req, res, {})
    }

    getSession(req, res) {
        if((!req.session.userinfo) || (!req.session.userinfo.isAuthenticated)) {
            this.userinfos = null
            return(false)
        } else {
            req.session.touch()
            this.userinfos = req.session.userinfo
            return(true)
        }
    }

    hasRole(roles) {
        if(!this.userinfos.userRoles) return(false)
        if(typeof(roles) == 'string') return(this.userinfos.userRoles.includes(roles))
        else if(Array.isArray(roles)) {
            for(let role of roles) {
                if(this.userinfos.userRoles.includes(role)) return(true)
            }
        }
        return(false)
    }

///////////////////////////API starts here.../////////////////////////////
    async hw(req, res) {
        this.ok(req, res, {hello:'world'})
    }

    async checkauth(req, res) {
        if(this.getSession(req, res)) {
            this.ok(req, res, {
                authenticated: true,
                userInfos: this.userinfos,
            })
        } else {
            this.ok(req, res, {
                authenticated: false,
                userInfos: null,
            })
        }

    }

    async login(req, res) {
        console.log('====>req.json', req.body)
        let [isValid, payload, errors] = this.utils.validateMapObject(req.body, {
            username: ((val, obj) => (typeof(val)=='string') && (val.length>3) ),
            passwd: ((val, obj) => (typeof(val)=='string') && (val.length>7) ),
        },{ 
            'username': 'username',
            'passwd': 'passwd',
        })
        
        if((!isValid)){
            this.err(req, res, `Invalid request', 'Invalid login payload:: ${errors}`, 401)
            return
        }

        if((payload.username=='toto') && (payload.passwd=='azertyuiop')){
            req.session.userinfo = {
                username: payload.username,
                roles: ['admin']
            }
            this.ok(req, res, {
                authenticated: true,
                userInfos: req.session.userinfo,
            })
        } else {
            this.ok(req, res, {
                authenticated: false,
                userInfos: null,
            })            
        }
    }
    
}