#!/bin/bash
# Test Pipeline Prerequisites
# Prüft alle Voraussetzungen für CI/CD Pipeline Tests

set -euo pipefail

echo "=========================================="
echo "CI/CD Pipeline Prerequisites Check"
echo "=========================================="
echo ""

ERRORS=0
WARNINGS=0

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

check_pass() {
    echo -e "${GREEN}✓${NC} $1"
}

check_fail() {
    echo -e "${RED}✗${NC} $1"
    ((ERRORS++))
}

check_warn() {
    echo -e "${YELLOW}⚠${NC} $1"
    ((WARNINGS++))
}

# 1. Check Gitea Runner
echo "1. Checking Gitea Runner..."
if [ -d "deployment/gitea-runner" ]; then
    cd deployment/gitea-runner
    if docker compose ps 2>/dev/null | grep -q "gitea-runner.*Up"; then
        check_pass "Gitea Runner container is running"
    else
        check_fail "Gitea Runner container is not running"
        echo "   Run: cd deployment/gitea-runner && docker compose up -d"
    fi
    
    if docker compose ps 2>/dev/null | grep -q "gitea-runner-dind.*Up"; then
        check_pass "Gitea Runner DinD container is running"
    else
        check_fail "Gitea Runner DinD container is not running"
    fi
    
    if [ -f "data/.runner" ]; then
        check_pass "Gitea Runner is registered (data/.runner exists)"
    else
        check_warn "Gitea Runner may not be registered (data/.runner missing)"
        echo "   Run: ./register.sh"
    fi
    cd - > /dev/null
else
    check_fail "deployment/gitea-runner directory not found"
fi

echo ""

# 2. Check Workflow Files
echo "2. Checking Workflow Files..."
if [ -f ".gitea/workflows/build-image.yml" ]; then
    check_pass "build-image.yml workflow exists"
else
    check_fail ".gitea/workflows/build-image.yml not found"
fi

if [ -f ".gitea/workflows/manual-deploy.yml" ]; then
    check_pass "manual-deploy.yml workflow exists"
else
    check_warn ".gitea/workflows/manual-deploy.yml not found (optional)"
fi

echo ""

# 3. Check Ansible Playbooks
echo "3. Checking Ansible Playbooks..."
ANSIBLE_PLAYBOOKS=(
    "deployment/ansible/playbooks/deploy-application-code.yml"
    "deployment/ansible/playbooks/install-composer-dependencies.yml"
    "deployment/ansible/playbooks/deploy-image.yml"
    "deployment/ansible/playbooks/backup.yml"
)

for playbook in "${ANSIBLE_PLAYBOOKS[@]}"; do
    if [ -f "$playbook" ]; then
        check_pass "$(basename $playbook) exists"
    else
        check_fail "$playbook not found"
    fi
done

echo ""

# 4. Check Ansible Inventory
echo "4. Checking Ansible Inventory..."
if [ -f "deployment/ansible/inventory/production.yml" ]; then
    check_pass "Ansible inventory file exists"
else
    check_fail "deployment/ansible/inventory/production.yml not found"
fi

echo ""

# 5. Check Docker Compose Files
echo "5. Checking Docker Compose Files..."
if [ -f "deployment/stacks/production/docker-compose.base.yml" ]; then
    check_pass "Production docker-compose.base.yml exists"
else
    check_fail "Production docker-compose.base.yml not found"
fi

if [ -f "deployment/stacks/production/docker-compose.production.yml" ]; then
    check_pass "Production docker-compose.production.yml exists"
else
    check_fail "Production docker-compose.production.yml not found"
fi

if [ -f "deployment/stacks/staging/docker-compose.base.yml" ]; then
    check_pass "Staging docker-compose.base.yml exists"
else
    check_warn "Staging docker-compose.base.yml not found (optional for staging tests)"
fi

echo ""

# 6. Check Dockerfile
echo "6. Checking Dockerfile..."
if [ -f "Dockerfile.production" ]; then
    check_pass "Dockerfile.production exists"
else
    check_fail "Dockerfile.production not found"
fi

echo ""

# 7. Check SSH Key (if exists locally)
echo "7. Checking SSH Configuration..."
if [ -f "$HOME/.ssh/production" ] || [ -f "$HOME/.ssh/id_rsa" ] || [ -f "$HOME/.ssh/id_ed25519" ]; then
    check_pass "SSH key found (local check only)"
    echo "   Note: SSH_PRIVATE_KEY secret must be configured in Gitea"
else
    check_warn "No SSH key found locally (may be configured in Gitea secrets)"
fi

echo ""

# 8. Check Registry Access (if possible)
echo "8. Checking Docker Registry Access..."
REGISTRY="registry.michaelschiemer.de"
if command -v curl >/dev/null 2>&1; then
    if curl -s -k --connect-timeout 5 "https://${REGISTRY}/v2/" >/dev/null 2>&1 || \
       curl -s --connect-timeout 5 "http://94.16.110.151:5000/v2/" >/dev/null 2>&1; then
        check_pass "Docker Registry is accessible"
    else
        check_warn "Docker Registry may not be accessible (check network/firewall)"
    fi
else
    check_warn "curl not available, skipping registry check"
fi

echo ""

# 9. Check Git Repository
echo "9. Checking Git Repository..."
if git remote get-url origin 2>/dev/null | grep -q "git.michaelschiemer.de"; then
    check_pass "Git remote points to Gitea"
    REMOTE_URL=$(git remote get-url origin 2>/dev/null || echo "")
    echo "   Remote: $REMOTE_URL"
else
    check_warn "Git remote may not point to Gitea"
    REMOTE_URL=$(git remote get-url origin 2>/dev/null || echo "not configured")
    echo "   Remote: $REMOTE_URL"
fi

# Check for staging and main branches
if git show-ref --verify --quiet refs/heads/staging 2>/dev/null; then
    check_pass "staging branch exists locally"
else
    check_warn "staging branch not found locally (may need to fetch)"
fi

if git show-ref --verify --quiet refs/heads/main 2>/dev/null; then
    check_pass "main branch exists locally"
else
    check_warn "main branch not found locally (may need to fetch)"
fi

echo ""

# Summary
echo "=========================================="
echo "Summary"
echo "=========================================="
if [ $ERRORS -eq 0 ] && [ $WARNINGS -eq 0 ]; then
    echo -e "${GREEN}✓ All checks passed!${NC}"
    echo ""
    echo "Next steps:"
    echo "1. Verify Gitea Secrets are configured:"
    echo "   https://git.michaelschiemer.de/michael/michaelschiemer/settings/secrets/actions"
    echo ""
    echo "2. Test Staging Pipeline:"
    echo "   git checkout staging"
    echo "   echo '# Test' >> README.md"
    echo "   git commit -m 'test: CI/CD pipeline'"
    echo "   git push origin staging"
    echo ""
    echo "3. Monitor Pipeline:"
    echo "   https://git.michaelschiemer.de/michael/michaelschiemer/actions"
    exit 0
elif [ $ERRORS -eq 0 ]; then
    echo -e "${YELLOW}⚠ Checks passed with warnings${NC}"
    echo "   Warnings: $WARNINGS"
    echo ""
    echo "Review warnings above and proceed with testing."
    exit 0
else
    echo -e "${RED}✗ Checks failed${NC}"
    echo "   Errors: $ERRORS"
    echo "   Warnings: $WARNINGS"
    echo ""
    echo "Please fix the errors above before testing the pipeline."
    exit 1
fi