#!/bin/bash
# Pre-commit hook: validates staged .sh and .ts files
# Install: git config core.hooksPath .githooks

set -eo pipefail

RED='\033[0;31m'
GREEN='\033[0;32m'
NC='\033[0m'

errors=0

# ─── Shell script validation ──────────────────────────────────────────

staged_sh=$(git diff --cached --name-only --diff-filter=ACM | grep '\.sh$' || true)

if [[ -n "$staged_sh" ]]; then
    echo "Validating staged shell scripts..."

    for file in $staged_sh; do
        # 1. Syntax check
        if ! bash -n "$file" 2>/dev/null; then
            printf "${RED}FAIL${NC} %s: syntax error\n" "$file"
            bash -n "$file" 2>&1 | head -3
            errors=$((errors + 1))
            continue
        fi

        # 2. No relative source (breaks curl|bash)
        if grep -qn 'source \.\./' "$file" 2>/dev/null || grep -qn 'source \./' "$file" 2>/dev/null; then
            printf "${RED}FAIL${NC} %s: relative source path (breaks curl|bash)\n" "$file"
            grep -n 'source \.\.' "$file" 2>/dev/null || true
            errors=$((errors + 1))
        fi

        # 3. No echo -e (breaks macOS bash 3.x)
        if grep -qn 'echo -e ' "$file" 2>/dev/null; then
            printf "${RED}FAIL${NC} %s: echo -e (use printf for macOS compat)\n" "$file"
            errors=$((errors + 1))
        fi

        # 4. No set -u / set -euo (breaks env var checks)
        if grep -qn 'set -euo' "$file" 2>/dev/null; then
            printf "${RED}FAIL${NC} %s: set -euo pipefail (drop the 'u', use set -eo pipefail)\n" "$file"
            errors=$((errors + 1))
        fi
    done

    if [[ $errors -gt 0 ]]; then
        echo ""
        printf "${RED}%d error(s) found. Commit blocked.${NC}\n" "$errors"
        echo "Fix the issues above and try again."
        exit 1
    fi

    printf "${GREEN}All %d scripts passed validation.${NC}\n" "$(echo "$staged_sh" | wc -w | tr -d ' ')"
fi

# ─── Biome lint for TypeScript ─────────────────────────────────────────

staged_ts=$(git diff --cached --name-only --diff-filter=ACM | grep '^packages/cli/src/.*\.ts$' || true)

if [[ -n "$staged_ts" ]]; then
    echo "Running Biome lint on staged TypeScript files..."
    if ! (cd packages/cli && bunx @biomejs/biome lint src/); then
        echo ""
        printf "${RED}Biome lint failed. Commit blocked.${NC}\n"
        echo "Run 'cd packages/cli && bunx @biomejs/biome lint src/' to see details."
        exit 1
    fi
    printf "${GREEN}Biome lint passed.${NC}\n"
fi