add(gitea-api): comment getter and update functions

This implements the getter api functions and update functions for
comments. WIP for #1.

internal/gitea/comment.go

@@ -0,0 +1,72 @@
+package gitea
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+type Comment struct {
+	Id                 uint
+	Body               string
+	Issue_url          string
+	Assets             []string
+	Html_url           string
+	User               User
+	Original_author    string
+	Original_author_id uint
+	Pull_request_url   string
+	Created_at         time.Time
+	Updated_at         time.Time
+}
+
+func (gitea *Gitea) GetComments(repo Repository) ([]Comment, error) {
+	url := fmt.Sprintf("%s/repos/%s/issues/comments", gitea.Url(), repo.Full_name)
+	response, err := http.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	defer response.Body.Close()
+	var data []Comment
+	decoder := json.NewDecoder(response.Body)
+	// NOTE: remove this if I do not want to store everything from the json result in the struct
+	decoder.DisallowUnknownFields() // remain if every field shall be extracted
+	if err = decoder.Decode(&data); err != nil {
+		return nil, err
+	}
+	return data, nil
+}
+
+func (gitea *Gitea) GetComment(repo Repository, id uint) (Comment, error) {
+	url := fmt.Sprintf("%s/repos/%s/issues/comments/%d", gitea.Url(), repo.Full_name, id)
+	response, err := http.Get(url)
+	var comment Comment
+	if err != nil {
+		return comment, err
+	}
+	defer response.Body.Close()
+	decoder := json.NewDecoder(response.Body)
+	// NOTE: remove this if I do not want to store everything from the json result in the struct
+	decoder.DisallowUnknownFields() // remain if every field shall be extracted
+	if err = decoder.Decode(&comment); err != nil {
+		return comment, err
+	}
+	return comment, err
+}
+
+func (gitea *Gitea) UpdateComment(repo Repository, comment Comment) error {
+	url := fmt.Sprintf("%s/repos/%s/issues/comments/%d", gitea.Url(), repo.Full_name, comment.Id)
+	json, err := json.Marshal(&map[string]interface{}{
+		"body": comment.Body,
+	})
+	if err != nil {
+		return err
+	}
+	_, err = http.NewRequest(http.MethodPatch, url, bytes.NewBuffer(json))
+	if err != nil {
+		return err
+	}
+	return nil
+}

internal/gitea/comment_test.go

@@ -0,0 +1 @@
+package gitea