added side context panel and repo only search bar

internal/domain/git/binary.go

@@ -7,6 +7,8 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"sort"
+	"strconv"
 	"strings"
 )
 
@@ -508,3 +510,197 @@ func ArchiveStream(repoPath string, ref string, format string, w io.Writer) erro
 	}
 	return nil
 }
+
+// ── Language stats ─────────────────────────────────────────────────────────────
+
+// LangStat holds the aggregate file-count and percentage for one language.
+type LangStat struct {
+	Name  string  `json:"name"`
+	Color string  `json:"color"`
+	Count int     `json:"count"`
+	Pct   float64 `json:"pct"`
+}
+
+// extLang maps file extensions to (display name, hex color).
+var extLang = map[string][2]string{
+	".go":     {"Go", "#00ADD8"},
+	".ts":     {"TypeScript", "#3178C6"},
+	".tsx":    {"TypeScript", "#3178C6"},
+	".js":     {"JavaScript", "#F7DF1E"},
+	".jsx":    {"JavaScript", "#F7DF1E"},
+	".mjs":    {"JavaScript", "#F7DF1E"},
+	".py":     {"Python", "#3572A5"},
+	".rb":     {"Ruby", "#CC342D"},
+	".rs":     {"Rust", "#DEA584"},
+	".java":   {"Java", "#B07219"},
+	".cs":     {"C#", "#178600"},
+	".cpp":    {"C++", "#F34B7D"},
+	".cc":     {"C++", "#F34B7D"},
+	".c":      {"C", "#555555"},
+	".h":      {"C", "#555555"},
+	".swift":  {"Swift", "#F05138"},
+	".kt":     {"Kotlin", "#A97BFF"},
+	".php":    {"PHP", "#4F5D95"},
+	".html":   {"HTML", "#E34C26"},
+	".css":    {"CSS", "#563D7C"},
+	".scss":   {"SCSS", "#C6538C"},
+	".sql":    {"SQL", "#e38c00"},
+	".sh":     {"Shell", "#89E051"},
+	".bash":   {"Shell", "#89E051"},
+	".yaml":   {"YAML", "#CB171E"},
+	".yml":    {"YAML", "#CB171E"},
+	".json":   {"JSON", "#292929"},
+	".md":     {"Markdown", "#083FA1"},
+	".tf":     {"HCL", "#844FBA"},
+	".proto":  {"Protobuf", "#5F5CE9"},
+	".dart":   {"Dart", "#00B4AB"},
+	".lua":    {"Lua", "#000080"},
+	".r":      {"R", "#198CE7"},
+}
+
+// LanguageStats analyses the file tree at ref and returns language breakdown
+// sorted by file count descending. Languages under 3% are collapsed into "Other".
+func LanguageStats(repoPath, ref string) ([]LangStat, error) {
+	if ref == "" {
+		ref = "HEAD"
+	}
+	out, err := run(repoPath, "ls-tree", "-r", "--name-only", ref)
+	if err != nil {
+		return nil, err
+	}
+
+	counts := map[string]int{}
+	total := 0
+	for _, line := range strings.Split(strings.TrimSpace(string(out)), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		ext := strings.ToLower(filepath.Ext(line))
+		lang, ok := extLang[ext]
+		if ok {
+			counts[lang[0]]++
+		} else {
+			counts["Other"]++
+		}
+		total++
+	}
+	if total == 0 {
+		return []LangStat{}, nil
+	}
+
+	// Aggregate by name with color lookup.
+	colorOf := map[string]string{"Other": "#8B8B8B"}
+	for _, v := range extLang {
+		colorOf[v[0]] = v[1]
+	}
+
+	var stats []LangStat
+	otherCount := 0
+	for name, count := range counts {
+		pct := float64(count) / float64(total) * 100
+		if name == "Other" || pct < 3.0 {
+			otherCount += count
+			continue
+		}
+		stats = append(stats, LangStat{Name: name, Color: colorOf[name], Count: count, Pct: pct})
+	}
+	sort.Slice(stats, func(i, j int) bool { return stats[i].Count > stats[j].Count })
+	if len(stats) > 10 {
+		for _, s := range stats[10:] {
+			otherCount += s.Count
+		}
+		stats = stats[:10]
+	}
+	if otherCount > 0 {
+		stats = append(stats, LangStat{
+			Name:  "Other",
+			Color: "#8B8B8B",
+			Count: otherCount,
+			Pct:   float64(otherCount) / float64(total) * 100,
+		})
+	}
+	return stats, nil
+}
+
+// ── Contributor stats ─────────────────────────────────────────────────────────
+
+// Contributor holds a commit author name and their commit count.
+type Contributor struct {
+	Name    string `json:"name"`
+	Commits int    `json:"commits"`
+}
+
+// Contributors returns the top limit commit authors sorted by commit count.
+// Uses git shortlog which is fast even on large repos.
+func Contributors(repoPath string, limit int) ([]Contributor, error) {
+	out, err := run(repoPath, "shortlog", "-sn", "--no-merges", "HEAD")
+	if err != nil {
+		return []Contributor{}, nil // empty repo or detached HEAD — not an error
+	}
+
+	var result []Contributor
+	for _, line := range strings.Split(strings.TrimSpace(string(out)), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		// Format: "    42\tAlice Wang"
+		idx := strings.Index(line, "\t")
+		if idx < 0 {
+			continue
+		}
+		countStr := strings.TrimSpace(line[:idx])
+		name := strings.TrimSpace(line[idx+1:])
+		n, err := strconv.Atoi(countStr)
+		if err != nil {
+			continue
+		}
+		result = append(result, Contributor{Name: name, Commits: n})
+		if len(result) >= limit {
+			break
+		}
+	}
+	return result, nil
+}
+
+// CommitCount returns the total number of commits reachable from HEAD.
+func CommitCount(repoPath string) (int, error) {
+	out, err := run(repoPath, "rev-list", "--count", "HEAD")
+	if err != nil {
+		return 0, nil // empty repo
+	}
+	n, err := strconv.Atoi(strings.TrimSpace(string(out)))
+	if err != nil {
+		return 0, nil
+	}
+	return n, nil
+}
+
+// SearchFiles returns file paths matching query (case-insensitive substring)
+// in the repository tree at ref, capped at limit results.
+func SearchFiles(repoPath, ref, query string, limit int) ([]string, error) {
+	if ref == "" {
+		ref = "HEAD"
+	}
+	out, err := run(repoPath, "ls-tree", "-r", "--name-only", ref)
+	if err != nil {
+		return []string{}, nil // empty repo
+	}
+
+	lower := strings.ToLower(query)
+	var results []string
+	for _, line := range strings.Split(strings.TrimSpace(string(out)), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		if strings.Contains(strings.ToLower(line), lower) {
+			results = append(results, line)
+			if len(results) >= limit {
+				break
+			}
+		}
+	}
+	return results, nil
+}