✨ feat: Initial commit

internal/report/report.go

@@ -0,0 +1,89 @@
+package report
+
+import (
+	_ "embed"
+	"encoding/json"
+	"fmt"
+	"html/template"
+	"os"
+	"sort"
+	"time"
+
+	"github.com/YuzuZensai/Git-Identity-Audit/internal/github"
+	"github.com/YuzuZensai/Git-Identity-Audit/internal/scanner"
+)
+
+//go:embed template.html
+var templateHTML string
+
+var htmlTemplate = template.Must(template.New("report").Parse(templateHTML))
+
+func WriteHTML(path string, entries []scanner.Entry, events []github.Event) error {
+	dataJSON, err := json.Marshal(entries)
+	if err != nil {
+		return fmt.Errorf("marshaling entries: %w", err)
+	}
+	eventsJSON, err := json.Marshal(events)
+	if err != nil {
+		return fmt.Errorf("marshaling events: %w", err)
+	}
+
+	f, err := os.Create(path)
+	if err != nil {
+		return fmt.Errorf("creating %s: %w", path, err)
+	}
+	defer f.Close()
+
+	return htmlTemplate.Execute(f, struct {
+		DataJSON    template.JS
+		EventsJSON  template.JS
+		GeneratedAt string
+	}{
+		DataJSON:    template.JS(dataJSON),
+		EventsJSON:  template.JS(eventsJSON),
+		GeneratedAt: time.Now().Format(time.RFC1123),
+	})
+}
+
+type summaryRow struct {
+	Name       string
+	Email      string
+	Count      int
+	RepoCounts map[string]int
+}
+
+func PrintSummary(entries []scanner.Entry) {
+	rows := map[string]*summaryRow{}
+	for _, e := range entries {
+		key := e.Name + "\x00" + e.Email
+		row, ok := rows[key]
+		if !ok {
+			row = &summaryRow{Name: e.Name, Email: e.Email, RepoCounts: map[string]int{}}
+			rows[key] = row
+		}
+		row.Count++
+		row.RepoCounts[e.Repo]++
+	}
+
+	sorted := make([]*summaryRow, 0, len(rows))
+	for _, r := range rows {
+		sorted = append(sorted, r)
+	}
+	sort.Slice(sorted, func(i, j int) bool { return sorted[i].Count > sorted[j].Count })
+
+	fmt.Printf("\n%d unique identities found:\n\n", len(sorted))
+	for i, r := range sorted {
+		repoNames := make([]string, 0, len(r.RepoCounts))
+		for repo := range r.RepoCounts {
+			repoNames = append(repoNames, repo)
+		}
+		sort.Strings(repoNames)
+
+		fmt.Printf("%3d. %s <%s>\n", i+1, r.Name, r.Email)
+		fmt.Printf("     %d commits across %d repo(s):\n", r.Count, len(repoNames))
+		for _, repo := range repoNames {
+			fmt.Printf("       - %s (%d)\n", repo, r.RepoCounts[repo])
+		}
+		fmt.Println()
+	}
+}