1 files changed, 103 insertions, 0 deletions
diff --git a/cmd/generate/src_contribs.go b/cmd/generate/src_contribs.go
new file mode 100644
index 0000000..eaff24b
--- /dev/null
+++ b/cmd/generate/src_contribs.go
@@ -0,0 +1,103 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"regexp"
+	"strings"
+	"time"
+
+	"sigs.k8s.io/yaml"
+)
+
+type Contribution struct {
+	URLs        []string `json:"urls"`
+	Tags        []string `json:"tags"`
+	SponsoredBy string   `json:"sponsored-by"`
+	Desc        string   `json:"desc"`
+
+	SubmittedAt time.Time `json:"submitted-at"`
+}
+
+func ReadContribs(filename string) ([]Contribution, error) {
+	bs, err := os.ReadFile(filename)
+	if err != nil {
+		return nil, err
+	}
+	var ret []Contribution
+	if err := yaml.UnmarshalStrict(bs, &ret); err != nil {
+		return nil, err
+	}
+	for i := range ret {
+		contrib := ret[i]
+		if err := contrib.Fill(); err != nil {
+			return nil, err
+		}
+		ret[i] = contrib
+	}
+	return ret, nil
+}
+
+func (c *Contribution) Fill() error {
+	var err error
+	if c.SubmittedAt.IsZero() {
+		c.SubmittedAt, err = c.getSubmittedAt()
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+var (
+	reGitHubPR      = regexp.MustCompile(`^https://github.com/([^/?#]+)/([^/?#]+)/pull/([0-9]+)(?:\?[^#]*)?(?:#.*)?$`)
+	rePiperMailDate = regexp.MustCompile(`^\s*<I>([^<]+)</I>\s*$`)
+)
+
+func (c Contribution) getSubmittedAt() (time.Time, error) {
+	if m := reGitHubPR.FindStringSubmatch(c.URLs[0]); m != nil {
+		user := m[1]
+		repo := m[2]
+		prnum := m[3]
+		resp, err := http.Get("https://api.github.com/repos/" + user + "/" + repo + "/pulls/" + prnum)
+		if err != nil {
+			return time.Time{}, err
+		}
+		if resp.StatusCode != http.StatusOK {
+			return time.Time{}, fmt.Errorf("unexpected HTTP status: %v", resp.Status)
+		}
+		jsonBytes, err := io.ReadAll(resp.Body)
+		if err != nil {
+			return time.Time{}, err
+		}
+		var obj struct {
+			CreatedAt time.Time `json:"created_at"`
+		}
+		if err := json.Unmarshal(jsonBytes, &obj); err != nil {
+			return time.Time{}, err
+		}
+		return obj.CreatedAt, nil
+	}
+	if strings.Contains(c.URLs[0], "/pipermail/") {
+		resp, err := http.Get(c.URLs[0])
+		if err != nil {
+			return time.Time{}, err
+		}
+		if resp.StatusCode != http.StatusOK {
+			return time.Time{}, fmt.Errorf("unexpected HTTP status: %v", resp.Status)
+		}
+		htmlBytes, err := io.ReadAll(resp.Body)
+		if err != nil {
+			return time.Time{}, err
+		}
+		for _, line := range strings.Split(string(htmlBytes), "\n") {
+			if m := rePiperMailDate.FindStringSubmatch(line); m != nil {
+				return time.Parse(time.UnixDate, m[1])
+			}
+		}
+	}
+	return time.Time{}, fmt.Errorf("idk how to get timestamps for %q", c.URLs[0])
+}