commit d559356e570a22d54bc9f80273d05cef8fbb5118
Author: Paul Lecuq <paul@paulbsd.com>
Date:   Sat Jan 5 23:26:55 2019 +0100

    first commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5307335
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+github_to_gogs
+github_to_gogs.ini
diff --git a/github_to_gogs.go b/github_to_gogs.go
new file mode 100644
index 0000000..d1f4df2
--- /dev/null
+++ b/github_to_gogs.go
@@ -0,0 +1,212 @@
+package main
+
+import (
+  "fmt"
+  "net/http"
+  "log"
+  "bytes"
+  "encoding/json"
+  "io/ioutil"
+  "gopkg.in/ini.v1"
+  "time"
+  "os"
+	"flag"
+)
+
+var globalconfig GlobalConfig
+var githubconfig GitHubConfig
+var gogsconfig GogsConfig
+
+var client *http.Client
+var resp *http.Response
+var err error
+var repo []Githubrepo
+var repo_list []Githubrepo
+
+type Githubrepo struct {
+	Name string `json:"name"`
+	Clone_Url string `json:"clone_url"`
+}
+
+type GogsMigrateRepo struct {
+	Name string
+	Clone_Url string
+	Uid int
+	Mirror bool
+}
+
+type GlobalConfig struct {
+	RequestTimeout time.Duration
+	UserAgent string
+}
+
+type GitHubConfig struct {
+	StarsPages string
+	MaxPagesNumber int
+	AuthUsername string
+	AuthPassword string
+	ContentType string
+}
+
+type GogsConfig struct {
+	Uid int
+	Username string
+	RepoUrlTmpl string
+	MigrateUrl string
+	AuthToken string
+	ContentType string
+	Mirror bool
+}
+
+func main() {
+	GetConfig()
+	GetReposFromGitHub()
+	MigrateReposToGogs(repo_list)
+}
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: github_to_gogs [inputfile]\n")
+	flag.PrintDefaults()
+	os.Exit(2)
+}
+
+func GetConfig() {
+	flag.Usage = usage
+	flag.Parse()
+
+	var configfile string
+
+	if len(os.Args) > 1 {
+		configfile = os.Args[1]
+	} else {
+		usage()
+		os.Exit(2)
+	}
+  HandleError(err)
+
+	config, err := ini.Load(configfile)
+	HandleError(err)
+
+	global_section := config.Section("global")
+	github_section := config.Section("github")
+	gogs_section := config.Section("gogs")
+
+	globalconfig.UserAgent = global_section.Key("user_agent").String()
+	globalconfig.RequestTimeout, err = global_section.Key("request_timeout").Duration()
+	HandleError(err)
+
+	githubconfig.StarsPages = github_section.Key("stars_pages").String()
+	githubconfig.MaxPagesNumber, err = github_section.Key("max_pages_number").Int()
+	HandleError(err)
+
+	githubconfig.AuthUsername = github_section.Key("auth_username").String()
+	githubconfig.AuthPassword = github_section.Key("auth_password").String()
+	githubconfig.ContentType = github_section.Key("content_type").String()
+
+	gogsconfig.Uid, err = gogs_section.Key("uid").Int()
+	HandleError(err)
+
+	gogsconfig.Username = gogs_section.Key("username").String()
+	gogsconfig.RepoUrlTmpl = gogs_section.Key("repo_url_tmpl").String()
+	gogsconfig.MigrateUrl = gogs_section.Key("migrate_url").String()
+	gogsconfig.AuthToken = gogs_section.Key("auth_token").String()
+	gogsconfig.ContentType = gogs_section.Key("content_type").String()
+	gogsconfig.Mirror, err = gogs_section.Key("mirror").Bool()
+	HandleError(err)
+
+}
+
+func CheckGogsIsExistingRepo(repo Githubrepo) bool {
+	var isexists bool = false
+
+	client = &http.Client{}
+	resp = &http.Response{}
+
+	var gogs_repo_url string = fmt.Sprintf(gogsconfig.RepoUrlTmpl,gogsconfig.Username,repo.Name)
+
+	req, err := http.NewRequest("GET", gogs_repo_url, nil)
+	req.Header.Set("Authorization", gogsconfig.AuthToken)
+	req.Header.Set("User-Agent", globalconfig.UserAgent)
+
+	resp, err = client.Do(req)
+	HandleError(err)
+
+	if resp.StatusCode == 200 {
+		isexists = true
+	} else {
+		isexists = false
+	}
+
+	return isexists
+}
+
+func MigrateReposToGogs(repo_list []Githubrepo) {
+	fmt.Println("Migrate repos to Gogs...")
+
+	client = &http.Client{}
+	resp = &http.Response{}
+
+	for _,elem := range(repo_list) {
+		if !CheckGogsIsExistingRepo(elem) {
+			jsondata := fmt.Sprintf(`{"uid" : %d, "repo_name" : "%s" , "mirror" : %v, "clone_addr" : "%s"}`, gogsconfig.Uid, elem.Name, true, elem.Clone_Url)
+			fmt.Println(fmt.Sprintf("OK : Send migrating instruction for %s to gogs webservice",elem.Name))
+
+			req, err := http.NewRequest("POST", gogsconfig.MigrateUrl, bytes.NewBufferString(jsondata))
+			HandleError(err)
+
+			req.Header.Add("Content-Type", gogsconfig.ContentType)
+			req.Header.Set("User-Agent", globalconfig.UserAgent)
+			req.Header.Set("Authorization", gogsconfig.AuthToken)
+
+			client.Timeout=globalconfig.RequestTimeout
+
+			resp, err = client.Do(req)
+			HandleError(err)
+		} else {
+			fmt.Println(fmt.Sprintf("KO : Not migrating, %s exists ",elem.Name))
+		}
+	}
+}
+
+func GetReposFromGitHub() {
+	for num := 1; num <= githubconfig.MaxPagesNumber; num++ {
+		url := fmt.Sprintf(githubconfig.StarsPages, githubconfig.AuthUsername, num)
+
+		InvokeGitHub(url)
+
+		err = json.Unmarshal(*GetResponseBody(resp), &repo)
+		HandleError(err)
+
+		for _,elem := range repo {
+			repo_list = append(repo_list, elem)
+		}
+	}
+	fmt.Println("Repositories from Github fetched !")
+}
+
+func InvokeGitHub(url string) {
+	client = &http.Client{}
+	resp = &http.Response{}
+
+	req, err := http.NewRequest("GET", url, nil)
+	HandleError(err)
+
+	req.Header.Add("Content-Type", githubconfig.ContentType)
+	req.Header.Set("User-Agent", globalconfig.UserAgent)
+	req.SetBasicAuth(githubconfig.AuthUsername,githubconfig.AuthPassword)
+
+	resp, err = client.Do(req)
+	HandleError(err)
+}
+
+func GetResponseBody(resp *http.Response) *[]byte {
+	bodyBytes, err := ioutil.ReadAll(resp.Body)
+	HandleError(err)
+	return &bodyBytes
+}
+
+func HandleError(err error) {
+	if err != nil {
+		log.Fatal(err)
+	}
+}
diff --git a/github_to_gogs.ini.sample b/github_to_gogs.ini.sample
new file mode 100644
index 0000000..cdfc03b
--- /dev/null
+++ b/github_to_gogs.ini.sample
@@ -0,0 +1,20 @@
+[global]
+request_timeout=1200s
+user_agent="Golang"
+
+[github]
+stars_pages="https://api.github.com/users/%s/starred?page=%d"
+max_pages_number=8
+auth_username="user"
+auth_password="pass"
+content_type="application/x-www-form-urlencoded"
+
+[gogs]
+uid=1
+username="user"
+repo_url_tmpl="https://gogs.example.com/api/v1/repos/%s/%s"
+migrate_url="https://gogs.example.com/api/v1/repos/migrate"
+auth_token="token xxxx"
+content_type="application/json"
+mirror=true
+