#!/bin/sh
# Pre-commit hook: runs Ruff on staged Python files, frontend tests and build on staged TS/TSX/CSS files
#
# Install: cp scripts/pre-commit .git/hooks/pre-commit && chmod +x .git/hooks/pre-commit

set -e

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
NC='\033[0m'

# --- Ruff lint on staged Python files ---
STAGED_PY=$(git diff --cached --name-only --diff-filter=ACM -- '*.py')

if [ -n "$STAGED_PY" ]; then
    printf "${YELLOW}Running Ruff on staged Python files...${NC}\n"
    if command -v ruff >/dev/null 2>&1; then
        if ! echo "$STAGED_PY" | xargs ruff check; then
            printf "${RED}Ruff found issues. Fix them or run 'ruff check --fix' then re-stage.${NC}\n"
            exit 1
        fi
        printf "${GREEN}Ruff passed.${NC}\n"
    else
        printf "${YELLOW}Ruff not installed, skipping Python lint. Install with: pip install ruff${NC}\n"
    fi
fi

# --- Frontend checks on staged UI files ---
STAGED_FE=$(git diff --cached --name-only --diff-filter=ACM -- 'frontend/src/**/*.ts' 'frontend/src/**/*.tsx' 'frontend/src/**/*.css' 'frontend/index.html' 'frontend/vite.config.ts' 'frontend/tsconfig*.json' 'frontend/tailwind.config.*' 'frontend/components.json')

if [ -n "$STAGED_FE" ]; then
    if [ -d "frontend/node_modules" ]; then
        # Run tests first
        printf "${YELLOW}Running frontend tests...${NC}\n"
        if ! (cd frontend && npx vitest run --reporter=dot 2>&1); then
            printf "${RED}Frontend tests failed. Fix them before committing.${NC}\n"
            exit 1
        fi
        printf "${GREEN}Frontend tests passed.${NC}\n"

        # Build production bundle
        printf "${YELLOW}Building frontend...${NC}\n"
        if ! (cd frontend && npm run build 2>&1); then
            printf "${RED}Frontend build failed. Fix errors before committing.${NC}\n"
            exit 1
        fi
        printf "${GREEN}Frontend build succeeded.${NC}\n"

        # Stage the updated build output so it's included in this commit
        git add static/dist/
    else
        printf "${YELLOW}frontend/node_modules not found, skipping tests and build. Run: cd frontend && npm install${NC}\n"
    fi
fi