From 75160e070478f99f1a68f82a2c0b72849d69bcd6 Mon Sep 17 00:00:00 2001
From: James Tombleson <luther38@gmail.com>
Date: Sun, 12 May 2024 09:21:20 -0700
Subject: [PATCH] Started the API Client

---
 apiclient/client.go | 16 +++++++++++++++
 apiclient/users.go  | 47 +++++++++++++++++++++++++++++++++++++++++++++
 apiclient/util.go   | 31 ++++++++++++++++++++++++++++++
 cmd/server.go       |  4 +++-
 4 files changed, 97 insertions(+), 1 deletion(-)
 create mode 100644 apiclient/client.go
 create mode 100644 apiclient/users.go
 create mode 100644 apiclient/util.go

diff --git a/apiclient/client.go b/apiclient/client.go
new file mode 100644
index 0000000..e403e61
--- /dev/null
+++ b/apiclient/client.go
@@ -0,0 +1,16 @@
+package apiclient
+
+const (
+	HeaderContentType   = "Content-Type"
+	MIMEApplicationForm = "application/x-www-form-urlencoded"
+)
+
+type ApiClient struct {
+	Users Users
+}
+
+func New(serverAddress string) ApiClient {
+	return ApiClient{
+		Users: newUserService(serverAddress),
+	}
+}
diff --git a/apiclient/users.go b/apiclient/users.go
new file mode 100644
index 0000000..552846b
--- /dev/null
+++ b/apiclient/users.go
@@ -0,0 +1,47 @@
+package apiclient
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"git.jamestombleson.com/jtom38/newsbot-api/domain"
+)
+
+const (
+	UserLoginRoute    = "api/v1/users/login"
+	UserRegisterRoute = "api/v1/users/register"
+)
+
+type Users interface {
+	Login(username, password string) (domain.LoginResponse, error)
+}
+
+type userClient struct {
+	serverAddress string
+	client        http.Client
+}
+
+func newUserService(serverAddress string) userClient {
+	return userClient{
+		serverAddress: serverAddress,
+		client:        http.Client{},
+	}
+}
+
+func (a userClient) Login(username, password string) (domain.LoginResponse, error) {
+	endpoint := fmt.Sprintf("%s/%s", a.serverAddress, UserLoginRoute)
+
+	param := url.Values{}
+	param.Set("username", username)
+	param.Set("password", password)
+
+	// Create the struct we are expecting back from the API so we can have it populated
+	var bind = domain.LoginResponse{}
+	err := PostUrlForm(a.client, endpoint, param, &bind)
+	if err != nil {
+		return domain.LoginResponse{}, err
+	}
+
+	return bind, nil
+}
diff --git a/apiclient/util.go b/apiclient/util.go
new file mode 100644
index 0000000..6ba91f9
--- /dev/null
+++ b/apiclient/util.go
@@ -0,0 +1,31 @@
+package apiclient
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/url"
+)
+
+func PostUrlForm(client http.Client, endpoint string, param url.Values, t any) error {
+	payload := bytes.NewBufferString(param.Encode())
+	req, err := http.NewRequest(http.MethodPost, endpoint, payload)
+	if err != nil {
+		return err
+	}
+
+	req.Header.Set(HeaderContentType, MIMEApplicationForm)
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	decoder := json.NewDecoder(resp.Body)
+	err = decoder.Decode(&t)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/cmd/server.go b/cmd/server.go
index 4b350d0..3675fc2 100644
--- a/cmd/server.go
+++ b/cmd/server.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 
+	"git.jamestombleson.com/jtom38/newsbot-portal/apiclient"
 	"git.jamestombleson.com/jtom38/newsbot-portal/internal/config"
 	"git.jamestombleson.com/jtom38/newsbot-portal/internal/handlers"
 )
@@ -12,7 +13,8 @@ func main() {
 	ctx := context.Background()
 
 	cfg := config.New()
-	server := handlers.NewServer(ctx, cfg)
+	apiClient := apiclient.New(cfg.ServerAddress)
+	server := handlers.NewServer(ctx, cfg, apiClient)
 
 	fmt.Println("The server is online and waiting for requests.")
 	fmt.Printf("http://%v:8082\r\n", cfg.ServerAddress)