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gojekyll/plugins/github_metadata.go
2017-07-26 10:18:03 -04:00

112 lines
3.2 KiB
Go

package plugins
import (
"context"
"fmt"
"os"
"os/exec"
"regexp"
"strings"
"github.com/google/go-github/github"
"github.com/osteele/gojekyll/config"
"golang.org/x/oauth2"
)
func init() {
register("jekyll-github-metadata", jekyllGithubMetadataPlugin{})
}
// jekyllGithubMetadataPlugin emulates the jekyll-github-metadata plugin.
type jekyllGithubMetadataPlugin struct{ plugin }
func (p jekyllGithubMetadataPlugin) ModifySiteDrop(s Site, d map[string]interface{}) error {
nwo, err := getCurrentRepo(s.Config())
if err != nil {
return err
}
nameOwner := strings.SplitN(nwo, "/", 2)
ctx := context.Background()
var ts oauth2.TokenSource
if tok := os.Getenv("JEKYLL_GITHUB_TOKEN"); tok != "" {
ts = oauth2.StaticTokenSource(&oauth2.Token{AccessToken: tok})
} else if tok := os.Getenv("OCTOKIT_ACCESS_TOKEN"); tok != "" {
ts = oauth2.StaticTokenSource(&oauth2.Token{AccessToken: tok})
}
tc := oauth2.NewClient(ctx, ts)
client := github.NewClient(tc)
repo, _, err := client.Repositories.Get(ctx, nameOwner[0], nameOwner[1])
userPage := *repo.Name == fmt.Sprintf("%s.github.com", strings.ToLower(*repo.Owner.Login))
gh := map[string]interface{}{
"clone_url": repo.CloneURL,
"language": repo.Language,
"owner_gravatar_url": repo.Owner.GravatarID,
"owner_name": repo.Owner.Login,
"owner_url": repo.Owner.URL,
"project_tagline": repo.Description,
"project_title": repo.Name, // TODO is this right?
"repository_name": repo.Name,
"repository_nwo": nwo,
"repository_url": repo.URL,
"releases_url": repo.ReleasesURL,
"latest_release_url": repo.URL,
"issues_url": repo.IssuesURL,
"show_downloads?": repo.HasDownloads,
"repo_clone_url": repo.GitURL,
"is_project_page": !userPage,
"is_user_page": userPage,
// TODO: build_revision: `git rev-parse HEAD`
"api_url": "https://api.github.com",
"environment": "development",
"help_url": "https://help.github.com",
"hostname": "https://github.com",
"pages_hostname": "github.io",
// TODO
// contributors public_repositories show_downloads releases versions
// url tar_url zip_url wiki_url
}
for key, envName := range githubPagesEnvVars {
if s := os.Getenv(envName); s != "" {
gh[key] = s
}
}
d["github"] = gh
return err
}
var githubPagesEnvVars = map[string]string{
"build_revision": "JEKYLL_BUILD_REVISION",
"environment": "PAGES_ENV",
"api_url": "PAGES_API_URL",
"help_url": "PAGES_HELP_URL",
"hostname": "PAGES_GITHUB_HOSTNAME",
"pages_hostname": "PAGES_PAGES_HOSTNAME",
}
func getCurrentRepo(c *config.Config) (nwo string, err error) {
nwo = os.Getenv("PAGES_REPO_NWO")
if nwo != "" {
return
}
if s, ok := c.Variables["repository"]; ok {
if s, ok := s.(string); ok {
return s, nil
}
}
cmd := exec.Command("git", "remote", "-v") // nolint: gas
cmd.Dir = c.SourceDir()
out, err := cmd.Output()
if err != nil {
return
}
m := regexp.MustCompile(`origin\s+https://github.com/(.+?)/(.+)\.git\b`).FindStringSubmatch(string(out))
if m == nil {
return "", fmt.Errorf("jekyll-github-metadata failed to find current repository")
}
owner, name := m[1], m[2]
nwo = fmt.Sprintf("%s/%s", owner, name)
return
}