#!/bin/bash
# Validate CI/CD workflow syntax and structure

set -e

echo "🔍 Validating CI/CD Workflow"
echo "================================"

# 1. Check workflow file exists
if [ ! -f ".gitea/workflows/ci-cd.yaml" ]; then
    echo "❌ Workflow file not found: .gitea/workflows/ci-cd.yaml"
    exit 1
fi

echo "✅ Workflow file found"

# 2. Validate YAML syntax
if command -v yq >/dev/null 2>&1; then
    if ! yq eval '.' .gitea/workflows/ci-cd.yaml > /dev/null 2>&1; then
        echo "❌ Invalid YAML syntax"
        yq eval '.' .gitea/workflows/ci-cd.yaml || true
        exit 1
    fi
    echo "✅ YAML syntax valid"
else
    echo "⚠️  yq not installed, skipping YAML validation"
fi

# 3. YAML Linting with custom config
if command -v yamllint >/dev/null 2>&1; then
    if [ -f ".yamllint.yaml" ]; then
        yamllint -c .yamllint.yaml .gitea/workflows/ci-cd.yaml
    else
        yamllint .gitea/workflows/ci-cd.yaml
    fi
elif docker info >/dev/null 2>&1; then
    if [ -f ".yamllint.yaml" ]; then
        docker run --rm -v $(pwd):/workspace -w /workspace pipelinecomponents/yamllint:latest \
            yamllint -c .yamllint.yaml .gitea/workflows/ci-cd.yaml
    else
        docker run --rm -v $(pwd):/workspace -w /workspace pipelinecomponents/yamllint:latest \
            yamllint .gitea/workflows/ci-cd.yaml
    fi
else
    echo "⚠️  Neither yamllint nor docker available, skipping linting"
fi

# 3. Check required fields
MISSING_FIELDS=()

if command -v yq >/dev/null 2>&1; then
    if [ -z "$(yq eval '.name' .gitea/workflows/ci-cd.yaml 2>/dev/null)" ]; then
        MISSING_FIELDS+=("name")
    fi

    if [ -z "$(yq eval '.on' .gitea/workflows/ci-cd.yaml 2>/dev/null)" ]; then
        MISSING_FIELDS+=("on")
    fi

    if [ -z "$(yq eval '.jobs' .gitea/workflows/ci-cd.yaml 2>/dev/null)" ]; then
        MISSING_FIELDS+=("jobs")
    fi

    if [ ${#MISSING_FIELDS[@]} -gt 0 ]; then
        echo "❌ Missing required fields: ${MISSING_FIELDS[*]}"
        exit 1
    fi
    echo "✅ All required fields present"
else
    echo "⚠️  yq not installed, skipping field validation"
fi

# 4. Check jobs structure
if command -v yq >/dev/null 2>&1; then
    JOBS=$(yq eval '.jobs | keys' .gitea/workflows/ci-cd.yaml 2>/dev/null)
    echo "📋 Jobs defined: $JOBS"

    for job in $JOBS; do
        job_str=$(echo $job | tr -d '"')
        
        # Check job has steps
        if [ -z "$(yq eval ".jobs.$job_str.steps" .gitea/workflows/ci-cd.yaml 2>/dev/null)" ]; then
            echo "❌ Job $job_str has no steps"
            exit 1
        fi
        
        steps_count=$(yq eval ".jobs.$job_str.steps | length" .gitea/workflows/ci-cd.yaml 2>/dev/null)
        echo "  ✅ $job_str: $steps_count steps"
    done
else
    echo "⚠️  yq not installed, skipping job structure validation"
fi

# 5. Check Arcodange-specific configurations
if command -v yq >/dev/null 2>&1; then
    if [ -n "$(yq eval '.env.GITEA_INTERNAL' .gitea/workflows/ci-cd.yaml 2>/dev/null)" ]; then
        echo "✅ Arcodange internal URL configured"
    else
        echo "⚠️  Arcodange internal URL not found"
    fi

    if [ -n "$(yq eval '.env.GITEA_EXTERNAL' .gitea/workflows/ci-cd.yaml 2>/dev/null)" ]; then
        echo "✅ Arcodange external URL configured"
    else
        echo "⚠️  Arcodange external URL not found"
    fi

    # 6. Check concurrency settings
    if [ -n "$(yq eval '.concurrency' .gitea/workflows/ci-cd.yaml 2>/dev/null)" ]; then
        echo "✅ Concurrency control configured"
    else
        echo "⚠️  No concurrency control (consider adding)"
    fi
else
    echo "⚠️  yq not installed, skipping Arcodange-specific validations"
fi

echo ""
echo "🎉 Workflow Validation Successful!"
echo "================================"
echo "📁 Location: .gitea/workflows/ci-cd.yaml"
if command -v yq >/dev/null 2>&1; then
    JOBS=$(yq eval '.jobs | keys | join(", ")' .gitea/workflows/ci-cd.yaml 2>/dev/null || echo 'Unable to parse')
    echo "🔧 Jobs: $JOBS"
else
    echo "🔧 Jobs: yq not installed"
fi
echo "🎯 Ready for deployment"