# System Monitor Platform - AWS Infrastructure
#
# This Terraform configuration sets up:
# - EC2 instance for running Docker Compose (demo/staging)
# - Lambda functions for data processing pipeline
# - SQS queue for buffering metrics
# - S3 bucket for metric backups
# - Security groups and IAM roles

terraform {
  required_version = ">= 1.0"

  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
  }

  # Uncomment for remote state
  # backend "s3" {
  #   bucket = "your-terraform-state-bucket"
  #   key    = "sysmonstm/terraform.tfstate"
  #   region = "us-east-1"
  # }
}

provider "aws" {
  region = var.aws_region

  default_tags {
    tags = {
      Project     = "sysmonstm"
      Environment = var.environment
      ManagedBy   = "terraform"
    }
  }
}

# Data sources
data "aws_availability_zones" "available" {
  state = "available"
}

data "aws_ami" "amazon_linux_2023" {
  most_recent = true
  owners      = ["amazon"]

  filter {
    name   = "name"
    values = ["al2023-ami-*-x86_64"]
  }

  filter {
    name   = "virtualization-type"
    values = ["hvm"]
  }
}