resource "aws_iam_role" "lambda" {
  name = "lambda"
  path = "/${var.name}/"

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

resource "aws_iam_policy" "lambda" {
  name        = "lambda-policy"
  path        = "/${var.name}/"
  description = "IAM policy for Lambda functions"

  policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": [
        "logs:CreateLogGroup",
        "logs:CreateLogStream",
        "logs:PutLogEvents"
      ],
      "Resource": "arn:aws:logs:*:*:*",
      "Effect": "Allow"
    },
    {
      "Action": [
        "ssm:GetParameter"
      ],
      "Resource": "arn:aws:ssm:*:*:parameter/${var.name}/*",
      "Effect": "Allow"
    }
  ]
}
EOF
}

resource "aws_iam_role_policy_attachment" "lambda" {
  role       = aws_iam_role.lambda.name
  policy_arn = aws_iam_policy.lambda.arn
}

resource "aws_iam_role_policy_attachment" "lambda_vpc_access" {
  role       = aws_iam_role.lambda.name
  policy_arn = "arn:aws:iam::aws:policy/service-role/AWSLambdaVPCAccessExecutionRole"
}