Fix GH#254: bd init now detects and chains with existing git hooks
- Detect existing git hooks (pre-commit framework, custom scripts) - Prompt user with 3 options: chain (recommended), overwrite, skip - Chain mode preserves existing hooks by calling them first - Overwrite mode creates timestamped backups - Add tests for hook detection and installation - Update documentation with chaining feature Fixes silent overwrites of pre-commit framework hooks that caused test failures to slip through. Amp-Thread-ID: https://ampcode.com/threads/T-37164fd7-6452-40b0-b5dd-c13672dcb843 Co-authored-by: Amp <amp@ampcode.com>
This commit is contained in:
Steve Yegge
+232
-20
@@ -7,6 +7,7 @@ import (
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"os/exec"
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"path/filepath"
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"strings"
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"time"
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"github.com/fatih/color"
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"github.com/spf13/cobra"
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@@ -430,6 +431,70 @@ func hooksInstalled() bool {
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return true
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}
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// hookInfo contains information about an existing hook
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type hookInfo struct {
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name string
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path string
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exists bool
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isBdHook bool
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isPreCommit bool
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content string
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}
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// detectExistingHooks scans for existing git hooks
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func detectExistingHooks() ([]hookInfo, error) {
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hooksDir := filepath.Join(".git", "hooks")
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hooks := []hookInfo{
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{name: "pre-commit", path: filepath.Join(hooksDir, "pre-commit")},
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{name: "post-merge", path: filepath.Join(hooksDir, "post-merge")},
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{name: "pre-push", path: filepath.Join(hooksDir, "pre-push")},
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}
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for i := range hooks {
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content, err := os.ReadFile(hooks[i].path)
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if err == nil {
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hooks[i].exists = true
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hooks[i].content = string(content)
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hooks[i].isBdHook = strings.Contains(hooks[i].content, "bd (beads)")
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// Only detect pre-commit framework if not a bd hook
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if !hooks[i].isBdHook {
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hooks[i].isPreCommit = strings.Contains(hooks[i].content, "pre-commit run") ||
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strings.Contains(hooks[i].content, ".pre-commit-config")
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}
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}
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}
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return hooks, nil
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}
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// promptHookAction asks user what to do with existing hooks
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func promptHookAction(existingHooks []hookInfo) string {
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yellow := color.New(color.FgYellow).SprintFunc()
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fmt.Printf("\n%s Found existing git hooks:\n", yellow("⚠"))
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for _, hook := range existingHooks {
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if hook.exists && !hook.isBdHook {
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hookType := "custom script"
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if hook.isPreCommit {
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hookType = "pre-commit framework"
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}
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fmt.Printf(" - %s (%s)\n", hook.name, hookType)
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}
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}
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fmt.Printf("\nHow should bd proceed?\n")
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fmt.Printf(" [1] Chain with existing hooks (recommended)\n")
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fmt.Printf(" [2] Overwrite existing hooks\n")
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fmt.Printf(" [3] Skip git hooks installation\n")
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fmt.Printf("Choice [1-3]: ")
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var response string
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_, _ = fmt.Scanln(&response)
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response = strings.TrimSpace(response)
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return response
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}
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// installGitHooks installs git hooks inline (no external dependencies)
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func installGitHooks() error {
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hooksDir := filepath.Join(".git", "hooks")
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@@ -439,9 +504,111 @@ func installGitHooks() error {
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return fmt.Errorf("failed to create hooks directory: %w", err)
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}
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// Detect existing hooks
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existingHooks, err := detectExistingHooks()
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if err != nil {
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return fmt.Errorf("failed to detect existing hooks: %w", err)
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}
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// Check if any non-bd hooks exist
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hasExistingHooks := false
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for _, hook := range existingHooks {
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if hook.exists && !hook.isBdHook {
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hasExistingHooks = true
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break
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}
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}
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// Determine installation mode
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chainHooks := false
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if hasExistingHooks {
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cyan := color.New(color.FgCyan).SprintFunc()
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choice := promptHookAction(existingHooks)
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switch choice {
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case "1", "":
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chainHooks = true
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case "2":
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// Overwrite mode - backup existing hooks
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for _, hook := range existingHooks {
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if hook.exists && !hook.isBdHook {
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timestamp := time.Now().Format("20060102-150405")
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backup := hook.path + ".backup-" + timestamp
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if err := os.Rename(hook.path, backup); err != nil {
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return fmt.Errorf("failed to backup %s: %w", hook.name, err)
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}
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fmt.Printf(" Backed up %s to %s\n", hook.name, filepath.Base(backup))
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}
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}
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case "3":
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fmt.Printf("Skipping git hooks installation.\n")
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fmt.Printf("You can install manually later with: %s\n", cyan("./examples/git-hooks/install.sh"))
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return nil
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default:
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return fmt.Errorf("invalid choice: %s", choice)
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}
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}
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// pre-commit hook
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preCommitPath := filepath.Join(hooksDir, "pre-commit")
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preCommitContent := `#!/bin/sh
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var preCommitContent string
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if chainHooks {
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// Find existing pre-commit hook
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var existingPreCommit string
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for _, hook := range existingHooks {
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if hook.name == "pre-commit" && hook.exists && !hook.isBdHook {
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// Move to .pre-commit-old
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oldPath := hook.path + ".old"
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if err := os.Rename(hook.path, oldPath); err != nil {
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return fmt.Errorf("failed to move existing pre-commit: %w", err)
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}
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existingPreCommit = oldPath
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break
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}
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}
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preCommitContent = `#!/bin/sh
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#
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# bd (beads) pre-commit hook (chained)
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#
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# This hook chains bd functionality with your existing pre-commit hook.
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# Run existing hook first
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if [ -x "` + existingPreCommit + `" ]; then
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"` + existingPreCommit + `" "$@"
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EXIT_CODE=$?
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if [ $EXIT_CODE -ne 0 ]; then
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exit $EXIT_CODE
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fi
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fi
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# Check if bd is available
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if ! command -v bd >/dev/null 2>&1; then
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echo "Warning: bd command not found, skipping pre-commit flush" >&2
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exit 0
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fi
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# Check if we're in a bd workspace
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if [ ! -d .beads ]; then
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exit 0
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fi
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# Flush pending changes to JSONL
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if ! bd sync --flush-only >/dev/null 2>&1; then
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echo "Error: Failed to flush bd changes to JSONL" >&2
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echo "Run 'bd sync --flush-only' manually to diagnose" >&2
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exit 1
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fi
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# If the JSONL file was modified, stage it
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if [ -f .beads/issues.jsonl ]; then
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git add .beads/issues.jsonl 2>/dev/null || true
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fi
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exit 0
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`
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} else {
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preCommitContent = `#!/bin/sh
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#
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# bd (beads) pre-commit hook
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#
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@@ -477,10 +644,68 @@ fi
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exit 0
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`
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}
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// post-merge hook
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postMergePath := filepath.Join(hooksDir, "post-merge")
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postMergeContent := `#!/bin/sh
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var postMergeContent string
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if chainHooks {
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// Find existing post-merge hook
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var existingPostMerge string
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for _, hook := range existingHooks {
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if hook.name == "post-merge" && hook.exists && !hook.isBdHook {
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// Move to .post-merge-old
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oldPath := hook.path + ".old"
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if err := os.Rename(hook.path, oldPath); err != nil {
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return fmt.Errorf("failed to move existing post-merge: %w", err)
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}
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existingPostMerge = oldPath
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break
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}
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}
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postMergeContent = `#!/bin/sh
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#
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# bd (beads) post-merge hook (chained)
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#
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# This hook chains bd functionality with your existing post-merge hook.
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# Run existing hook first
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if [ -x "` + existingPostMerge + `" ]; then
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"` + existingPostMerge + `" "$@"
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EXIT_CODE=$?
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if [ $EXIT_CODE -ne 0 ]; then
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exit $EXIT_CODE
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fi
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fi
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# Check if bd is available
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if ! command -v bd >/dev/null 2>&1; then
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echo "Warning: bd command not found, skipping post-merge import" >&2
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exit 0
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fi
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# Check if we're in a bd workspace
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if [ ! -d .beads ]; then
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exit 0
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fi
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# Check if issues.jsonl exists and was updated
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if [ ! -f .beads/issues.jsonl ]; then
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exit 0
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fi
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# Import the updated JSONL
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if ! bd import -i .beads/issues.jsonl >/dev/null 2>&1; then
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echo "Warning: Failed to import bd changes after merge" >&2
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echo "Run 'bd import -i .beads/issues.jsonl' manually" >&2
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fi
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exit 0
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`
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} else {
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postMergeContent = `#!/bin/sh
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#
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# bd (beads) post-merge hook
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#
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@@ -515,24 +740,6 @@ fi
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exit 0
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`
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// Backup existing hooks if present
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for _, hookPath := range []string{preCommitPath, postMergePath} {
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if _, err := os.Stat(hookPath); err == nil {
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// Read existing hook to check if it's already a bd hook
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// #nosec G304 - controlled path from git directory
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content, err := os.ReadFile(hookPath)
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if err == nil && strings.Contains(string(content), "bd (beads)") {
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// Already a bd hook, skip backup
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continue
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}
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// Backup non-bd hook
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backup := hookPath + ".backup"
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if err := os.Rename(hookPath, backup); err != nil {
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return fmt.Errorf("failed to backup existing hook: %w", err)
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}
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}
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}
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// Write pre-commit hook (executable scripts need 0700)
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@@ -547,6 +754,11 @@ exit 0
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return fmt.Errorf("failed to write post-merge hook: %w", err)
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}
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if chainHooks {
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green := color.New(color.FgGreen).SprintFunc()
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fmt.Printf("%s Chained bd hooks with existing hooks\n", green("✓"))
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}
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return nil
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}
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