#!/usr/bin/env bash

# script/hassfest: Lightweight local validation for Home Assistant integration
# Note: This is a simplified version. Full hassfest runs in GitHub Actions.

set -e

cd "$(dirname "$0")/.."

INTEGRATION_PATH="custom_components/tibber_prices"
ERRORS=0

echo "==> Running local integration validation..."
echo ""

# Check 1: config_flow.py exists
echo "✓ Checking config_flow.py existence..."
if [ ! -f "$INTEGRATION_PATH/config_flow.py" ]; then
    echo "  ✗ ERROR: config_flow.py not found"
    ERRORS=$((ERRORS + 1))
else
    echo "  ✓ config_flow.py exists"
fi

# Check 2: manifest.json syntax
echo "✓ Checking manifest.json syntax..."
if ! python -m json.tool "$INTEGRATION_PATH/manifest.json" > /dev/null 2>&1; then
    echo "  ✗ ERROR: manifest.json has invalid JSON syntax"
    ERRORS=$((ERRORS + 1))
else
    echo "  ✓ manifest.json is valid JSON"
fi

# Check 3: Translation files syntax
echo "✓ Checking translation files syntax..."
for lang_file in "$INTEGRATION_PATH"/translations/*.json; do
    if [ -f "$lang_file" ]; then
        lang=$(basename "$lang_file")
        if ! python -m json.tool "$lang_file" > /dev/null 2>&1; then
            echo "  ✗ ERROR: $lang has invalid JSON syntax"
            ERRORS=$((ERRORS + 1))
        else
            echo "  ✓ $lang is valid JSON"
        fi
    fi
done

# Check 4: Custom translation files syntax
if [ -d "$INTEGRATION_PATH/custom_translations" ]; then
    echo "✓ Checking custom translation files syntax..."
    for lang_file in "$INTEGRATION_PATH"/custom_translations/*.json; do
        if [ -f "$lang_file" ]; then
            lang=$(basename "$lang_file")
            if ! python -m json.tool "$lang_file" > /dev/null 2>&1; then
                echo "  ✗ ERROR: custom_translations/$lang has invalid JSON syntax"
                ERRORS=$((ERRORS + 1))
            else
                echo "  ✓ custom_translations/$lang is valid JSON"
            fi
        fi
    done
fi

# Check 5: Python syntax
# Note: We use ast.parse() instead of py_compile to avoid creating __pycache__ artifacts
# ast.parse() validates syntax without writing any files to disk
echo "✓ Checking Python syntax..."
PYTHON_ERRORS=0
while IFS= read -r py_file; do
    if ! python -c "import ast; ast.parse(open('$py_file').read())" 2>/dev/null; then
        echo "  ✗ ERROR: $py_file has syntax errors"
        PYTHON_ERRORS=$((PYTHON_ERRORS + 1))
        ERRORS=$((ERRORS + 1))
    fi
done < <(find "$INTEGRATION_PATH" -name "*.py" -type f)
if [ $PYTHON_ERRORS -eq 0 ]; then
    echo "  ✓ All Python files have valid syntax"
fi

# Check 6: Required manifest fields
echo "✓ Checking required manifest fields..."
REQUIRED_FIELDS=("domain" "name" "version" "documentation" "issue_tracker" "codeowners")
for field in "${REQUIRED_FIELDS[@]}"; do
    if ! python -c "import json; data=json.load(open('$INTEGRATION_PATH/manifest.json')); exit(0 if '$field' in data else 1)" 2>/dev/null; then
        echo "  ✗ ERROR: manifest.json missing required field: $field"
        ERRORS=$((ERRORS + 1))
    fi
done
if [ $ERRORS -eq 0 ]; then
    echo "  ✓ All required manifest fields present"
fi

echo ""
if [ $ERRORS -eq 0 ]; then
    echo "==> ✓ All local validation checks passed!"
    echo ""
    echo "Note: Full hassfest validation runs in GitHub Actions."
    echo "      Push your changes to run complete validation."
    exit 0
else
    echo "==> ✗ Found $ERRORS error(s)"
    echo ""
    echo "Note: This is a simplified local validation."
    echo "      Full hassfest validation runs in GitHub Actions."
    exit 1
fi