Infrastructure as Code Templates

# AWS Provider
provider "aws" {
  region = "us-east-1"
}

# S3 Bucket for website hosting
resource "aws_s3_bucket" "website" {
  bucket = "my-static-website-bucket"
}

resource "aws_s3_bucket_website_configuration" "website" {
  bucket = aws_s3_bucket.website.id

  index_document {
    suffix = "index.html"
  }

  error_document {
    key = "error.html"
  }
}

# CloudFront Distribution
resource "aws_cloudfront_distribution" "website" {
  origin {
    domain_name = aws_s3_bucket.website.bucket_regional_domain_name
    origin_id   = "S3-Website"

    s3_origin_config {
      origin_access_identity = aws_cloudfront_origin_access_identity.website.cloudfront_access_identity_path
    }
  }

  enabled             = true
  default_root_object = "index.html"

  default_cache_behavior {
    allowed_methods  = ["GET", "HEAD"]
    cached_methods   = ["GET", "HEAD"]
    target_origin_id = "S3-Website"

    forwarded_values {
      query_string = false
      cookies {
        forward = "none"
      }
    }

    viewer_protocol_policy = "redirect-to-https"
    min_ttl                = 0
    default_ttl            = 3600
    max_ttl                = 86400
  }

  restrictions {
    geo_restriction {
      restriction_type = "none"
    }
  }

  viewer_certificate {
    cloudfront_default_certificate = true
  }
}

output "website_url" {
  value = aws_cloudfront_distribution.website.domain_name
}

# Lambda function for API
resource "aws_lambda_function" "api" {
  filename         = "lambda.zip"
  function_name    = "api-handler"
  role            = aws_iam_role.lambda_role.arn
  handler         = "index.handler"
  runtime         = "nodejs18.x"

  environment {
    variables = {
      TABLE_NAME = aws_dynamodb_table.main.name
    }
  }
}

# DynamoDB Table
resource "aws_dynamodb_table" "main" {
  name           = "api-data"
  billing_mode   = "PAY_PER_REQUEST"
  hash_key       = "id"

  attribute {
    name = "id"
    type = "S"
  }
}

# API Gateway
resource "aws_apigatewayv2_api" "main" {
  name          = "serverless-api"
  protocol_type = "HTTP"
}

resource "aws_apigatewayv2_integration" "lambda" {
  api_id           = aws_apigatewayv2_api.main.id
  integration_type = "AWS_PROXY"
  integration_uri  = aws_lambda_function.api.invoke_arn
}

resource "aws_apigatewayv2_route" "default" {
  api_id    = aws_apigatewayv2_api.main.id
  route_key = "ANY /{proxy+}"
  target    = "integrations/${aws_apigatewayv2_integration.lambda.id}"
}

# ECS Cluster
resource "aws_ecs_cluster" "main" {
  name = "app-cluster"
}

# ECS Task Definition
resource "aws_ecs_task_definition" "app" {
  family                   = "app-task"
  network_mode             = "awsvpc"
  requires_compatibilities = ["FARGATE"]
  cpu                      = 256
  memory                   = 512

  container_definitions = jsonencode([{
    name  = "app"
    image = "nginx:latest"
    portMappings = [{
      containerPort = 80
      hostPort      = 80
    }]
  }])
}

# RDS PostgreSQL
resource "aws_db_instance" "main" {
  identifier           = "app-database"
  engine              = "postgres"
  engine_version      = "15"
  instance_class      = "db.t3.micro"
  allocated_storage   = 20
  db_name             = "appdb"
  username            = "admin"
  password            = var.db_password
  skip_final_snapshot = true
}