#!/bin/bash
set -euo pipefail

echo "===================================="
echo " Davidson CI - JavaScript/TypeScript"
echo "===================================="

JS_COUNT="${DAVIDSON_JS_COUNT:-0}"
TS_COUNT="${DAVIDSON_TS_COUNT:-0}"
TOTAL=$((JS_COUNT + TS_COUNT))

if [ "$TOTAL" -eq 0 ]; then
    echo "No JavaScript or TypeScript detected - skipping module"
    exit 0
fi

echo
echo "JavaScript files: $JS_COUNT"
echo "TypeScript files: $TS_COUNT"
echo

# -------------------------
# Dependencies
# -------------------------

echo "→ Node dependencies"

if [ -f package-lock.json ]; then
    npm ci
elif [ -f package.json ]; then
    echo "package.json found but no package-lock.json"
else
    echo "No package.json found"
fi

# -------------------------
# JavaScript syntax
# -------------------------

echo
echo "→ JavaScript syntax"

if [ "$JS_COUNT" -gt 0 ]; then
    find . \
        -type f \
        \( -name "*.js" -o -name "*.mjs" -o -name "*.cjs" \) \
        -not -path "./node_modules/*" \
        -print0 |
    while IFS= read -r -d '' file; do
        echo "Checking $file"
        node --check "$file"
    done
else
    echo "No JavaScript files - skipping syntax check"
fi

# -------------------------
# TypeScript
# -------------------------

echo
echo "→ TypeScript"

if [ "$TS_COUNT" -gt 0 ]; then
    if [ -f package.json ] && \
       node -e "let p=require('./package.json'); process.exit(p.scripts?.typecheck ? 0 : 1)"
    then
        npm run typecheck
    elif [ -x node_modules/.bin/tsc ]; then
        npx tsc --noEmit
    else
        echo "TypeScript detected but no TypeScript checker configured"
    fi
else
    echo "No TypeScript files - skipping"
fi

# -------------------------
# ESLint
# -------------------------

echo
echo "→ ESLint"

if [ -f package.json ] && \
   node -e "let p=require('./package.json'); process.exit(p.scripts?.lint ? 0 : 1)"
then
    npm run lint
else
    echo "No lint script - skipping"
fi

# -------------------------
# Tests
# -------------------------

echo
echo "→ JavaScript tests"

if [ -f package.json ] && \
   node -e "let p=require('./package.json'); process.exit(p.scripts?.test ? 0 : 1)"
then
    npm test
else
    echo "No test script - skipping"
fi

# -------------------------
# Build
# -------------------------

echo
echo "→ Frontend build"

if [ -f package.json ] && \
   node -e "let p=require('./package.json'); process.exit(p.scripts?.build ? 0 : 1)"
then
    npm run build
else
    echo "No build script - skipping"
fi

echo
echo "JavaScript/TypeScript module completed successfully"