Refactor: cleanup

- Introduce tracing
- Introduce cobra / viper framework
- Introduce resty client
- Seperate files in api/ and bot/
- Trim unused functions

api/postGenLoginUrl.go

@@ -0,0 +1,32 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/Penguin-71630/meme-bot-frontend-dc/tracing"
+	"go.uber.org/zap"
+)
+
+type GenLoginURLRequest struct {
+	UserId string `json:"userId"`
+}
+
+type GenLoginURLResponse struct {
+	LoginURL string `json:"loginUrl"`
+}
+
+func (c *Client) PostGenLoginURL(
+	userId string,
+) (string, error) {
+	var res GenLoginURLResponse
+	resp, err := c.client.R().
+		SetBody(GenLoginURLRequest{UserId: userId}).
+		Post("/auth/gen-login-url")
+	if err != nil || resp.StatusCode() != http.StatusOK {
+		tracing.Logger.Ctx(resp.Request.Context()).
+			Error("failed to post gen-login-url",
+				zap.Error(err))
+		return "", ErrRequestFailed
+	}
+	return res.LoginURL, nil
+}