plugins/contract-validator/hooks/auto-validate.sh

@@ -0,0 +1,195 @@
+#!/bin/bash
+# contract-validator SessionStart auto-validate hook
+# Validates plugin contracts only when plugin files have changed since last check
+# All output MUST have [contract-validator] prefix
+
+PREFIX="[contract-validator]"
+
+# ============================================================================
+# Configuration
+# ============================================================================
+
+# Enable/disable auto-check (default: true)
+AUTO_CHECK="${CONTRACT_VALIDATOR_AUTO_CHECK:-true}"
+
+# Cache location for storing last check hash
+CACHE_DIR="$HOME/.cache/claude-plugins/contract-validator"
+HASH_FILE="$CACHE_DIR/last-check.hash"
+
+# Marketplace location (installed plugins)
+MARKETPLACE_PATH="$HOME/.claude/plugins/marketplaces/leo-claude-mktplace"
+
+# ============================================================================
+# Early exit if disabled
+# ============================================================================
+
+if [[ "$AUTO_CHECK" != "true" ]]; then
+    exit 0
+fi
+
+# ============================================================================
+# Smart mode: Check if plugin files have changed
+# ============================================================================
+
+# Function to compute hash of all plugin manifest files
+compute_plugin_hash() {
+    local hash_input=""
+
+    if [[ -d "$MARKETPLACE_PATH/plugins" ]]; then
+        # Hash all plugin.json, hooks.json, and agent files
+        while IFS= read -r -d '' file; do
+            if [[ -f "$file" ]]; then
+                hash_input+="$(md5sum "$file" 2>/dev/null | cut -d' ' -f1)"
+            fi
+        done < <(find "$MARKETPLACE_PATH/plugins" \
+            \( -name "plugin.json" -o -name "hooks.json" -o -name "*.md" -path "*/agents/*" \) \
+            -print0 2>/dev/null | sort -z)
+    fi
+
+    # Also include marketplace.json
+    if [[ -f "$MARKETPLACE_PATH/.claude-plugin/marketplace.json" ]]; then
+        hash_input+="$(md5sum "$MARKETPLACE_PATH/.claude-plugin/marketplace.json" 2>/dev/null | cut -d' ' -f1)"
+    fi
+
+    # Compute final hash
+    echo "$hash_input" | md5sum | cut -d' ' -f1
+}
+
+# Ensure cache directory exists
+mkdir -p "$CACHE_DIR" 2>/dev/null
+
+# Compute current hash
+CURRENT_HASH=$(compute_plugin_hash)
+
+# Check if we have a previous hash
+if [[ -f "$HASH_FILE" ]]; then
+    PREVIOUS_HASH=$(cat "$HASH_FILE" 2>/dev/null)
+
+    # If hashes match, no changes - skip validation
+    if [[ "$CURRENT_HASH" == "$PREVIOUS_HASH" ]]; then
+        exit 0
+    fi
+fi
+
+# ============================================================================
+# Run validation (hashes differ or no cache)
+# ============================================================================
+
+ISSUES_FOUND=0
+WARNINGS=""
+
+# Function to add warning
+add_warning() {
+    WARNINGS+="  - $1"$'\n'
+    ((ISSUES_FOUND++))
+}
+
+# 1. Check all installed plugins have valid plugin.json
+if [[ -d "$MARKETPLACE_PATH/plugins" ]]; then
+    for plugin_dir in "$MARKETPLACE_PATH/plugins"/*/; do
+        if [[ -d "$plugin_dir" ]]; then
+            plugin_name=$(basename "$plugin_dir")
+            plugin_json="$plugin_dir/.claude-plugin/plugin.json"
+
+            if [[ ! -f "$plugin_json" ]]; then
+                add_warning "$plugin_name: missing .claude-plugin/plugin.json"
+                continue
+            fi
+
+            # Basic JSON validation
+            if ! python3 -c "import json; json.load(open('$plugin_json'))" 2>/dev/null; then
+                add_warning "$plugin_name: invalid JSON in plugin.json"
+                continue
+            fi
+
+            # Check required fields
+            if ! python3 -c "
+import json
+with open('$plugin_json') as f:
+    data = json.load(f)
+required = ['name', 'version', 'description']
+missing = [r for r in required if r not in data]
+if missing:
+    exit(1)
+" 2>/dev/null; then
+                add_warning "$plugin_name: plugin.json missing required fields"
+            fi
+        fi
+    done
+fi
+
+# 2. Check hooks.json files are properly formatted
+if [[ -d "$MARKETPLACE_PATH/plugins" ]]; then
+    while IFS= read -r -d '' hooks_file; do
+        plugin_name=$(basename "$(dirname "$(dirname "$hooks_file")")")
+
+        # Validate JSON
+        if ! python3 -c "import json; json.load(open('$hooks_file'))" 2>/dev/null; then
+            add_warning "$plugin_name: invalid JSON in hooks/hooks.json"
+            continue
+        fi
+
+        # Validate hook structure
+        if ! python3 -c "
+import json
+with open('$hooks_file') as f:
+    data = json.load(f)
+if 'hooks' not in data:
+    exit(1)
+valid_events = ['PreToolUse', 'PostToolUse', 'UserPromptSubmit', 'SessionStart', 'SessionEnd', 'Notification', 'Stop', 'SubagentStop', 'PreCompact']
+for event in data['hooks']:
+    if event not in valid_events:
+        exit(1)
+    for hook in data['hooks'][event]:
+        # Support both flat structure (type at top) and nested structure (matcher + hooks array)
+        if 'type' in hook:
+            # Flat structure: {type: 'command', command: '...'}
+            pass
+        elif 'matcher' in hook and 'hooks' in hook:
+            # Nested structure: {matcher: '...', hooks: [{type: 'command', ...}]}
+            for nested_hook in hook['hooks']:
+                if 'type' not in nested_hook:
+                    exit(1)
+        else:
+            exit(1)
+" 2>/dev/null; then
+            add_warning "$plugin_name: hooks.json has invalid structure or events"
+        fi
+    done < <(find "$MARKETPLACE_PATH/plugins" -path "*/hooks/hooks.json" -print0 2>/dev/null)
+fi
+
+# 3. Check agent references are valid (agent files exist and are markdown)
+if [[ -d "$MARKETPLACE_PATH/plugins" ]]; then
+    while IFS= read -r -d '' agent_file; do
+        plugin_name=$(basename "$(dirname "$(dirname "$agent_file")")")
+        agent_name=$(basename "$agent_file")
+
+        # Check file is not empty
+        if [[ ! -s "$agent_file" ]]; then
+            add_warning "$plugin_name: empty agent file $agent_name"
+            continue
+        fi
+
+        # Check file has markdown content (at least a header)
+        if ! grep -q '^#' "$agent_file" 2>/dev/null; then
+            add_warning "$plugin_name: agent $agent_name missing markdown header"
+        fi
+    done < <(find "$MARKETPLACE_PATH/plugins" -path "*/agents/*.md" -print0 2>/dev/null)
+fi
+
+# ============================================================================
+# Store new hash and report results
+# ============================================================================
+
+# Always store the new hash (even if issues found - we don't want to recheck)
+echo "$CURRENT_HASH" > "$HASH_FILE"
+
+# Report any issues found (non-blocking warning)
+if [[ $ISSUES_FOUND -gt 0 ]]; then
+    echo "$PREFIX Plugin contract validation found $ISSUES_FOUND issue(s):"
+    echo "$WARNINGS"
+    echo "$PREFIX Run /validate-contracts for full details"
+fi
+
+# Always exit 0 (non-blocking)
+exit 0

plugins/contract-validator/hooks/hooks.json

@@ -0,0 +1,10 @@
+{
+  "hooks": {
+    "SessionStart": [
+      {
+        "type": "command",
+        "command": "${CLAUDE_PLUGIN_ROOT}/hooks/auto-validate.sh"
+      }
+    ]
+  }
+}