factorize piwigo call

internal/piwigo/post.go

@@ -0,0 +1,77 @@
+package piwigo
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+)
+
+type Piwigo struct {
+	Url    string
+	Token  string
+	Method string
+}
+
+type PiwigoResult struct {
+	Stat       string      `json:"stat"`
+	Err        int         `json:"err"`
+	ErrMessage string      `json:"message"`
+	Result     interface{} `json:"result"`
+}
+
+func (p *Piwigo) BuildUrl() (string, error) {
+
+	Url, Err := url.Parse(p.Url)
+	if Err != nil {
+		return "", Err
+	}
+	Url.Path += "/ws.php"
+	q := Url.Query()
+	q.Set("format", "json")
+	q.Set("method", p.Method)
+	Url.RawQuery = q.Encode()
+	return Url.String(), nil
+}
+
+func (p *Piwigo) Post(req *url.Values, resp interface{}) error {
+	Url, Err := p.BuildUrl()
+	if Err != nil {
+		return Err
+	}
+
+	r, Err := http.PostForm(Url, *req)
+	if Err != nil {
+		return Err
+	}
+
+	defer r.Body.Close()
+
+	b, Err := ioutil.ReadAll(r.Body)
+	if Err != nil {
+		return Err
+	}
+
+	Result := PiwigoResult{
+		Result: resp,
+	}
+
+	Err = json.Unmarshal(b, &Result)
+	if Err != nil {
+		return Err
+	}
+
+	if Result.Stat != "ok" {
+		return fmt.Errorf("[Error %d] %s", Result.Err, Result.ErrMessage)
+	}
+
+	for _, c := range r.Cookies() {
+		if c.Name == "pwg_id" {
+			p.Token = c.Value
+			break
+		}
+	}
+
+	return nil
+}

login.go

@@ -1,12 +1,10 @@
 package main
 
 import (
-	"encoding/json"
-	"errors"
 	"fmt"
-	"io/ioutil"
-	"net/http"
 	"net/url"
+
+	"github.com/celogeek/piwigo-cli/internal/piwigo"
 )
 
 type LoginCommand struct {
@@ -17,57 +15,24 @@ type LoginCommand struct {
 
 var loginCommand LoginCommand
 
-type Result struct {
-	Stat   string `json:"stat"`
-	Result bool   `json:"result"`
-}
-
 func (c *LoginCommand) Execute(args []string) error {
 	fmt.Printf("Login on %s...\n", c.Url)
 
-	Url, err := url.Parse(c.Url)
-	if err != nil {
-		return err
-	}
-	Url.Path = "ws.php"
-	q := Url.Query()
-	q.Set("format", "json")
-	q.Set("method", "pwg.session.login")
-	Url.RawQuery = q.Encode()
-	fmt.Println(Url.String())
-
-	Form := url.Values{}
-	Form.Set("username", c.Login)
-	Form.Set("password", c.Password)
-
-	r, err := http.PostForm(Url.String(), Form)
-	if err != nil {
-		return err
-	}
-	defer r.Body.Close()
-
-	b, err := ioutil.ReadAll(r.Body)
-	if err != nil {
-		return err
+	Piwigo := piwigo.Piwigo{
+		Url:    c.Url,
+		Method: "pwg.session.login",
 	}
 
-	result := Result{}
+	result := false
 
-	err = json.Unmarshal(b, &result)
-	if err != nil {
-		return err
+	if Err := Piwigo.Post(&url.Values{
+		"username": []string{c.Login},
+		"password": []string{c.Password},
+	}, &result); Err != nil {
+		return Err
 	}
 
-	if !result.Result {
-		return errors.New("can't login with the credential provided")
-	}
-
-	for _, c := range r.Cookies() {
-		if c.Name == "pwg_id" {
-			fmt.Println("Token:", c.Value)
-			break
-		}
-	}
+	fmt.Printf("Token: %s\n", Piwigo.Token)
 
 	return nil
 }