#!/bin/bash
# Post-install hook - runs after plugin installation
set -e

PROJECT_ROOT="$(pwd)"
PLUGIN_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

echo "========================================"
echo "  Auto-Build Post-Install"
echo "========================================"
echo ""
echo "Project: $PROJECT_ROOT"
echo ""

# 1. Create .claude/rules/ if missing
mkdir -p "$PROJECT_ROOT/.claude/rules"

# 2. Copy auto-build-patterns.md to project
echo "Installing Auto-Build patterns..."
cp "$PLUGIN_DIR/rules/auto-build-patterns.md" "$PROJECT_ROOT/.claude/rules/"

# 3. Create empty auto-build-memory.md (will be populated by /ab:memory-save)
echo "# Auto-Build Learned Patterns

Last updated: Never

(This file is automatically updated by /ab:memory-save)" > "$PROJECT_ROOT/.claude/rules/auto-build-memory.md"

# 4. Create .auto-build-data/ structure
echo "Creating .auto-build-data/ structure..."
mkdir -p "$PROJECT_ROOT/.auto-build-data"/{specs,worktrees,memory/sessions,cache/qa-iterations}

# Initialize memory files
echo '{"patterns": [], "updated": null}' > "$PROJECT_ROOT/.auto-build-data/memory/patterns.json"
echo '{"gotchas": [], "updated": null}' > "$PROJECT_ROOT/.auto-build-data/memory/gotchas.json"
echo '{"worktrees": []}' > "$PROJECT_ROOT/.auto-build-data/worktrees/worktree-registry.json"

# 5. Add .auto-build-data/ to .gitignore if not present
if [ -f "$PROJECT_ROOT/.gitignore" ]; then
    if ! grep -q "^\.auto-build-data/" "$PROJECT_ROOT/.gitignore" 2>/dev/null; then
        echo "" >> "$PROJECT_ROOT/.gitignore"
        echo "# Auto-Build runtime data (local only)" >> "$PROJECT_ROOT/.gitignore"
        echo ".auto-build-data/" >> "$PROJECT_ROOT/.gitignore"
        echo "Added .auto-build-data/ to .gitignore"
    fi
else
    echo "# Auto-Build runtime data (local only)" > "$PROJECT_ROOT/.gitignore"
    echo ".auto-build-data/" >> "$PROJECT_ROOT/.gitignore"
    echo "Created .gitignore with .auto-build-data/ entry"
fi

# 6. Initialize or update CLAUDE.md
if [ ! -f "$PROJECT_ROOT/CLAUDE.md" ]; then
    echo "Generating CLAUDE.md from template..."
    cp "$PLUGIN_DIR/templates/CLAUDE.md.template" "$PROJECT_ROOT/CLAUDE.md"
    echo "✅ Created CLAUDE.md"
else
    # Add Auto-Build imports if not present
    if ! grep -q "auto-build-patterns.md" "$PROJECT_ROOT/CLAUDE.md"; then
        echo "" >> "$PROJECT_ROOT/CLAUDE.md"
        echo "# Auto-Build Integration" >> "$PROJECT_ROOT/CLAUDE.md"
        echo "@./.claude/rules/auto-build-patterns.md" >> "$PROJECT_ROOT/CLAUDE.md"
        echo "@./.claude/rules/auto-build-memory.md" >> "$PROJECT_ROOT/CLAUDE.md"
        echo "✅ Updated CLAUDE.md with Auto-Build imports"
    else
        echo "⚠️  CLAUDE.md already has Auto-Build imports"
    fi
fi

echo ""
echo "========================================"
echo "  Installation Complete!"
echo "========================================"
echo ""
echo "What was installed:"
echo "  ✅ .claude/rules/auto-build-patterns.md"
echo "  ✅ .claude/rules/auto-build-memory.md"
echo "  ✅ .auto-build-data/ structure"
echo "  ✅ CLAUDE.md (created or updated)"
echo "  ✅ .gitignore updated"
echo ""
echo "Quick Start:"
echo "  1. Restart Claude Code to load CLAUDE.md"
echo "  2. Run /ab:help for available commands"
echo "  3. Create your first spec: /ab:spec \"My Feature\""
echo ""