Service

.js

export default class Service {
    
    constructor(){
        this.host = process.env.API_URL
        const headers = new Headers()
        const token = sessionStorage.getItem('token')
        headers.append('Authorization',`Bearer ${token}`)
        this.options = {
            headers : headers,
            method : 'GET',
            mode : 'cors',
            body : null
        }
    }

    /**
     * 
     * @param {String} endpoint 
     * @param {object} body 
     * @param {boolean} isData
     */
    post(endpoint,body,isData){
        return new Promise( (resolve,reject) => {
            if(isData){
                this.options.body = body
            }else{
                this.options.body = JSON.stringify(body)
            }
            
            this.options.method = 'POST'
            endpoint =  endpoint.startsWith("/") ? endpoint : "/"+endpoint
            fetch(this.host+endpoint,this.options)
            .then(response => response.json())
            .then(response => this.handleResponse(response,resolve))
            .catch(error => reject(error))
        })
    }

    get(endpoint){
        return new Promise( (resolve, reject)=>{
            endpoint =  endpoint.startsWith("/") ? endpoint : "/"+endpoint
            fetch(this.host+endpoint,this.options)
            .then(response => response.json())
            .then(response => this.handleResponse(response,resolve))
            .catch(error => reject(error))
        })
    }

    put(endpoint,body,isData){
        return new Promise( (resolve,reject) => {
            if(isData){
                this.options.body = body
            }else{
                this.options.body = JSON.stringify(body)
            }
            this.options.method = 'PUT'
            endpoint =  endpoint.startsWith("/") ? endpoint : "/"+endpoint
            fetch(this.host+endpoint,this.options)
            .then(response => response.json())
            .then(response => this.handleResponse(response,resolve))
            .catch(error => reject(error))
        })
    }

      /**
     * @param {Response} response 
     * @param {object} resolve 
     */
    handleResponse(response,resolve){ 
        if(response.success){
            resolve(response.data)
        }else{
            throw new Error(response.httpMessage)
        }
    }
}