Test self-contained unified hooks

hooks/post-commit

@@ -0,0 +1,91 @@
+#!/bin/bash
+# Git OpenTimestamp Post-Commit Hook
+# Self-contained - no external dependencies
+# Generates cryptographic proof for each commit using OpenTimestamp
+
+set -e
+
+# Configuration
+OUTPUT_DIR=".ots"
+OUTPUT_FILE="$OUTPUT_DIR/proof.ots"
+
+# Ensure output directory exists
+mkdir -p "$OUTPUT_DIR"
+
+# Get the current commit hash
+COMMIT_HASH=$(git rev-parse HEAD)
+
+# Function to generate proof using ots CLI
+generate_with_ots_cli() {
+    local hash="$1"
+    local output="$2"
+    
+    # Create a temporary file with the hash (convert hex to binary)
+    local temp_file=$(mktemp)
+    local temp_ots="${temp_file}.ots"
+    
+    # Use python3 for hex to binary conversion (more portable than xxd)
+    python3 -c "import sys; sys.stdout.buffer.write(bytes.fromhex('$hash'))" > "$temp_file"
+    
+    # Generate timestamp - ots creates .ots file alongside the original
+    ots stamp "$temp_file" 2>/dev/null
+    
+    # Move the generated .ots file to the desired location
+    if [ -f "$temp_ots" ]; then
+        mv "$temp_ots" "$output"
+        rm -f "$temp_file"
+        return 0
+    else
+        rm -f "$temp_file"
+        return 1
+    fi
+}
+
+# Function to generate proof using nodejs fallback
+generate_with_node() {
+    local hash="$1"
+    local output="$2"
+    
+    node -e "
+const ots = require('@opentimestamps/ots');
+const fs = require('fs');
+const hash = '$hash';
+const output = '$output';
+const hashBuffer = Buffer.from(hash, 'hex');
+ots.Timestamp.hash(hashBuffer).then(timestamp => {
+    const proof = { hash: hash, timestamp: new Date().toISOString(), status: 'pending' };
+    fs.writeFileSync(output, JSON.stringify(proof, null, 2));
+    console.log('Generated local proof (nodejs fallback)');
+}).catch(err => { console.error('Error:', err); process.exit(1); });
+"
+}
+
+# Check for available tools and generate proof
+if command -v ots &> /dev/null; then
+    if generate_with_ots_cli "$COMMIT_HASH" "$OUTPUT_FILE"; then
+        echo "[ots] Generated proof with ots CLI: ${COMMIT_HASH:0:8}"
+    else
+        echo "[ots] Warning: ots CLI failed" >&2
+        exit 0
+    fi
+elif command -v node &> /dev/null && node -e "require('@opentimestamps/ots')" &> /dev/null 2>&1; then
+    generate_with_node "$COMMIT_HASH" "$OUTPUT_FILE"
+    echo "[ots] Generated proof with nodejs fallback: ${COMMIT_HASH:0:8}"
+else
+    echo "[ots] Warning: Neither ots CLI nor @opentimestamps/ots found, skipping proof" >&2
+    exit 0
+fi
+
+# Save previous commit hash for chaining
+PREV_COMMIT=$(git rev-parse HEAD^1 2>/dev/null || echo "")
+if [ -n "$PREV_COMMIT" ]; then
+    echo "$PREV_COMMIT" > "$OUTPUT_DIR/prev-commit.txt"
+fi
+
+# Create individual proof file for this commit
+INDIVIDUAL_PROOF="$OUTPUT_DIR/${COMMIT_HASH}.ots"
+if [ -f "$OUTPUT_FILE" ]; then
+    cp "$OUTPUT_FILE" "$INDIVIDUAL_PROOF"
+fi
+
+echo "[ots] Proof generated successfully"