feat: add centralized git hash retrieval script

- Create scripts/get-git-hash.sh for consistent git hash logic
- Update build scripts to use new centralized git hash function
- Add comprehensive documentation and usage examples
- Ensure branch-aware hash retrieval across all build types

Provides single source of truth for git hash retrieval, preventing inconsistencies
when builds use wrong branch's commit hash.

package.json

@@ -23,7 +23,7 @@
     "auto-run:ios": "./scripts/auto-run.sh --platform=ios",
     "auto-run:android": "./scripts/auto-run.sh --platform=android",
     "auto-run:electron": "./scripts/auto-run.sh --platform=electron",
-    "build:capacitor": "VITE_GIT_HASH=`git log -1 --pretty=format:%h` vite build --mode capacitor --config vite.config.capacitor.mts",
+    "build:capacitor": "VITE_GIT_HASH=$(./scripts/get-git-hash.sh) vite build --mode capacitor --config vite.config.capacitor.mts",
     "build:capacitor:sync": "npm run build:capacitor && npx cap sync",
     "build:ios": "./scripts/build-ios.sh",
     "build:ios:dev": "./scripts/build-ios.sh --dev",

scripts/build-electron.sh

@@ -168,7 +168,11 @@ build_web_assets() {
     local mode=$1
     log_info "Building web assets for Electron (mode: $mode)"
     
-    safe_execute "Building web assets" "VITE_GIT_HASH=\$(git log -1 --pretty=format:%h) vite build --mode $mode --config vite.config.electron.mts"
+    # Get git hash using the improved function from common.sh
+    local git_hash=$(get_git_hash)
+    log_debug "Using git hash: $git_hash"
+    
+    safe_execute "Building web assets" "VITE_GIT_HASH=$git_hash vite build --mode $mode --config vite.config.electron.mts"
 }
 
 # Sync with Capacitor

scripts/build-web.sh

@@ -203,8 +203,12 @@ execute_vite_build() {
     local mode="$1"
     log_info "Executing Vite build for $mode mode..."
     
+    # Get git hash using the improved function from common.sh
+    local git_hash=$(get_git_hash)
+    log_debug "Using git hash: $git_hash"
+    
     # Construct Vite build command
-    local vite_cmd="VITE_GIT_HASH=\$(git log -1 --pretty=format:%h) npx vite build --config vite.config.web.mts"
+    local vite_cmd="VITE_GIT_HASH=$git_hash npx vite build --config vite.config.web.mts"
     
     # Add mode if not development (development is default)
     if [ "$mode" != "development" ]; then
@@ -275,8 +279,12 @@ run_type_checking() {
 start_dev_server() {
     log_info "Starting Vite development server..."
     
+    # Get git hash using the improved function from common.sh
+    local git_hash=$(get_git_hash)
+    log_debug "Using git hash: $git_hash"
+    
     # Construct Vite dev server command
-    local vite_cmd="VITE_GIT_HASH=\$(git log -1 --pretty=format:%h) npx vite --config vite.config.web.mts"
+    local vite_cmd="VITE_GIT_HASH=$git_hash npx vite --config vite.config.web.mts"
     
     # Add mode if specified (though development is default)
     if [ "$BUILD_MODE" != "development" ]; then

scripts/common.sh

@@ -134,10 +134,25 @@ check_venv() {
 
 # Function to get git hash for versioning
 get_git_hash() {
-    if command -v git &> /dev/null; then
-        git log -1 --pretty=format:%h 2>/dev/null || echo "unknown"
+    # Use the dedicated git hash script for consistency
+    if [ -f "$(dirname "$0")/get-git-hash.sh" ]; then
+        "$(dirname "$0")/get-git-hash.sh"
     else
-        echo "unknown"
+        # Fallback to direct git command if script not found
+        if command -v git &> /dev/null; then
+            # Get the current branch name
+            local current_branch=$(git branch --show-current 2>/dev/null || git rev-parse --abbrev-ref HEAD 2>/dev/null)
+            
+            # If we're in a detached HEAD state or no branch, use HEAD
+            if [ -z "$current_branch" ] || [ "$current_branch" = "HEAD" ]; then
+                git log -1 --pretty=format:%h 2>/dev/null || echo "unknown"
+            else
+                # Use the current branch explicitly
+                git log -1 --pretty=format:%h "$current_branch" 2>/dev/null || echo "unknown"
+            fi
+        else
+            echo "unknown"
+        fi
     fi
 }
 

scripts/get-git-hash.sh

@@ -0,0 +1,105 @@
+#!/bin/bash
+# TimeSafari Git Hash Retrieval Script
+# Author: Matthew Raymer
+# Description: Retrieves the current git commit hash for the active branch
+#
+# This script ensures that the correct git hash is retrieved regardless of
+# the current branch or git state. It handles edge cases like detached HEAD
+# and provides fallbacks for when git is not available.
+#
+# ARCHITECTURAL BENEFITS:
+# - Centralized Logic: Single source of truth for git hash retrieval across all build scripts
+# - Consistent Behavior: Ensures all builds use the same git hash logic and format
+# - Maintainability: Changes to git hash logic only need to be made in one place
+# - Robust Error Handling: Handles edge cases that could cause build failures
+# - Branch-Aware: Explicitly uses current branch, preventing default branch fallback issues
+#
+# USAGE PATTERNS:
+#   # Direct usage
+#   ./scripts/get-git-hash.sh
+#
+#   # In build scripts (recommended)
+#   VITE_GIT_HASH=$(./scripts/get-git-hash.sh) npm run build
+#
+#   # In shell scripts
+#   git_hash=$(./scripts/get-git-hash.sh)
+#   echo "Current commit: $git_hash"
+#
+#   # In package.json scripts
+#   "build:capacitor": "VITE_GIT_HASH=$(./scripts/get-git-hash.sh) vite build --mode capacitor --config vite.config.capacitor.mts"
+#
+# OUTPUT:
+#   - Git commit hash (7 characters) if available (e.g., "bf08e57c")
+#   - "unknown" if git is not available or no repository found
+#
+# EXIT CODES:
+#   0 - Success (hash retrieved or "unknown" returned)
+#   1 - Error (should not occur in normal operation)
+#
+# EDGE CASES HANDLED:
+# - Detached HEAD state: Falls back to HEAD commit
+# - No git repository: Returns "unknown"
+# - Git not installed: Returns "unknown"
+# - No commits: Returns "unknown"
+# - Branch detection failure: Falls back to HEAD commit
+#
+# INTEGRATION POINTS:
+# - scripts/common.sh: Primary usage via get_git_hash() function
+# - package.json: Direct usage in build:capacitor script
+# - Build scripts: Used by build-web.sh, build-electron.sh, etc.
+# - Docker builds: Ensures consistent git hashes in containerized builds
+#
+# VALUE PROPOSITION:
+# This script was created to solve git hash inconsistencies across different
+# build environments and branch states. It provides a reliable, consistent
+# interface for git hash retrieval that works regardless of the current
+# git state or environment. This prevents issues like:
+# - Builds using wrong branch's commit hash
+# - Inconsistent versioning across different build types
+# - Build failures due to git state issues
+# - Manual git hash management in multiple scripts
+#
+# MAINTENANCE:
+# - Update this script if git hash retrieval logic needs to change
+# - All build scripts automatically benefit from improvements
+# - Test with various git states (detached HEAD, different branches, etc.)
+# - Ensure compatibility with CI/CD environments
+
+set -euo pipefail
+
+# Function to get git hash for versioning
+get_git_hash() {
+    # Check if git is available
+    if ! command -v git &> /dev/null; then
+        echo "unknown"
+        return 0
+    fi
+    
+    # Check if we're in a git repository
+    if ! git rev-parse --git-dir &> /dev/null; then
+        echo "unknown"
+        return 0
+    fi
+    
+    # Get the current branch name
+    local current_branch
+    current_branch=$(git branch --show-current 2>/dev/null || git rev-parse --abbrev-ref HEAD 2>/dev/null || echo "")
+    
+    # If we're in a detached HEAD state or no branch, use HEAD
+    if [ -z "$current_branch" ] || [ "$current_branch" = "HEAD" ]; then
+        git log -1 --pretty=format:%h 2>/dev/null || echo "unknown"
+    else
+        # Use the current branch explicitly
+        git log -1 --pretty=format:%h "$current_branch" 2>/dev/null || echo "unknown"
+    fi
+}
+
+# Main execution
+main() {
+    local git_hash
+    git_hash=$(get_git_hash)
+    echo "$git_hash"
+}
+
+# Run main function
+main "$@"