iam.tf

# iam.tf

data "aws_caller_identity" "current" {}

resource "aws_iam_role" "ec2_role" {
  name = "web_app_role"

  assume_role_policy = <<EOF
  {
    "Version": "2012-10-17",
    "Statement": [
      {
        "Action": "sts:AssumeRole",
        "Principal": {
          "Service": "ec2.amazonaws.com"
        },
        "Effect": "Allow",
        "Sid": ""
      }
    ]
  }
  EOF
}

resource "aws_iam_role_policy" "ec2_policy" {
  name = "web_app_policy"
  role = aws_iam_role.ec2_role.name

  policy = jsonencode({
    Version = "2012-10-17",
    Statement = [
      {
        Effect = "Allow",
        Action = [
          "s3:ListBucket",
          "s3:GetObject",
          "s3:PutObject"
        ],
        Resource = [
          "arn:aws:s3:::ai-greeting-cards-media",
          "arn:aws:s3:::ai-greeting-cards-media/*"
        ]
      },
      {
        Effect = "Allow",
        Action = [
          "ssm:DescribeInstanceInformation",
          "ssm:GetCommandInvocation",
          "ssm:ListCommands",
          "ssm:SendCommand",
          "ssm:GetParametersByPath",
          "ssm:GetParameter",
          "ssm:GetParameters",
          "ssm:StartSession"
        ],
        Resource = "*"
      }
    ]
  })
}

resource "aws_iam_role_policy_attachment" "ssm_policy_attachment" {
  role       = aws_iam_role.ec2_role.name
  policy_arn = "arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore"
}

resource "aws_iam_instance_profile" "ec2_instance_profile" {
  name = "web_app_instance_profile"
  role = aws_iam_role.ec2_role.name
}