module "default_tags" {
  source             = "git@github.com:theorchard/terraform-default-tags.git//?ref=2.0.0"
  environment        = var.environment
  application_family = var.application_family
  team_name          = "devops"
}

provider "aws" {
  region = var.aws_region

  default_tags {
    tags = module.default_tags.tags
  }
}


# Terraform backends cannot contain interpolations
terraform {
  backend "s3" {
    bucket  = "qa-ecommerce-terraform-state"
    key     = "qa/iam/generic_resources/terraform.tfstate"
    region  = "us-east-1"
    encrypt = "true"
  }
}

data "aws_caller_identity" "current" {}

# This service link role is used as a data source in terraform-fargate module.
resource "aws_iam_service_linked_role" "ecs_autoscaling_service_linked_role" {
  aws_service_name = "ecs.application-autoscaling.amazonaws.com"
}

# Fargate task execution policy document
data "aws_iam_policy_document" "fargate_task_execution_policy_document" {
  statement {
    actions = [
      "ecr:GetAuthorizationToken",
      "ecr:BatchCheckLayerAvailability",
      "ecr:GetDownloadUrlForLayer",
      "ecr:BatchGetImage",
    ]

    resources = [
      "*",
    ]
  }

  statement {
    actions = [
      "logs:*",
    ]

    resources = [
      "arn:aws:logs:*:${data.aws_caller_identity.current.account_id}:log-group:*",
    ]
  }
}

# Fargate task execution policy
resource "aws_iam_policy" "fargate_task_execution_policy" {
  name   = "Fargate-task-execution-policy"
  policy = data.aws_iam_policy_document.fargate_task_execution_policy_document.json
}

# Fargate datadog secrets manager policy document
data "aws_iam_policy_document" "fargate_datadog_secret_policy_document" {
  statement {
    effect = "Allow"

    resources = [
      "arn:aws:secretsmanager:*:*:secret:${var.environment}/datadog/",
      "arn:aws:secretsmanager:*:*:secret:${var.environment}/datadog/*",
    ]

    actions = [
      "secretsmanager:ListSecretVersionIds",
      "secretsmanager:GetSecretValue",
      "secretsmanager:GetResourcePolicy",
      "secretsmanager:DescribeSecret",
    ]
  }

  statement {
    effect    = "Allow"
    resources = ["*"]
    actions   = ["secretsmanager:GetRandomPassword"]
  }
}

# Fargate datadog secrets manager policy
resource "aws_iam_policy" "fargate_datadog_secret_policy" {
  name   = "SecretsManager-${var.environment}-datadog-policy"
  policy = data.aws_iam_policy_document.fargate_datadog_secret_policy_document.json
}

# Fargate machine to machine secrets manager policy document
data "aws_iam_policy_document" "machine_to_machine_secret_policy_document" {
  statement {
    effect = "Allow"

    resources = [
      "arn:aws:secretsmanager:${var.aws_region}:${data.aws_caller_identity.current.id}:secret:${var.environment}/ows-machine-to-machine/client_secret-*",
      "arn:aws:secretsmanager:${var.aws_region}:${data.aws_caller_identity.current.id}:secret:${var.environment}/lambda-jwt-refresh/jwt_token_expiration-*",
      "arn:aws:secretsmanager:${var.aws_region}:${data.aws_caller_identity.current.id}:secret:${var.environment}/lambda-jwt-refresh/jwt_token-*",
    ]

    actions = [
      "secretsmanager:ListSecretVersionIds",
      "secretsmanager:GetSecretValue",
      "secretsmanager:GetResourcePolicy",
      "secretsmanager:DescribeSecret",
    ]
  }

  statement {
    effect    = "Allow"
    resources = ["*"]
    actions   = ["secretsmanager:GetRandomPassword"]
  }

  statement {
    effect    = "Allow"
    resources = ["arn:aws:secretsmanager:${var.aws_region}:${data.aws_caller_identity.current.id}:secret:${var.environment}/lambda-jwt-refresh/jwt_enabled_services-*"]

    actions = [
      "secretsmanager:UpdateSecret",
      "secretsmanager:ListSecretVersionIds",
      "secretsmanager:GetSecretValue",
      "secretsmanager:GetResourcePolicy",
      "secretsmanager:DescribeSecret",
    ]
  }
}

# Fargate machine to machine secrets manager policy
resource "aws_iam_policy" "machine_to_machine_secret_policy" {
  name   = "SecretsManager-${var.environment}-ows-machine-to-machine-policy"
  policy = data.aws_iam_policy_document.machine_to_machine_secret_policy_document.json
}

# Fargate python-orchard-features SPLITIO_API_KEY policy document
data "aws_iam_policy_document" "python_orchard_features_splitio_policy_document" {
  statement {
    effect = "Allow"

    resources = [
      "arn:aws:secretsmanager:*:*:secret:${var.environment}/python-orchard-features/SPLITIO_API_KEY*",
      "arn:aws:secretsmanager:*:*:secret:${var.environment}/python-orchard-features/SPLITIO_API_KEY",
    ]

    actions = [
      "secretsmanager:GetSecretValue",
      "kms:Decrypt",
    ]
  }
}

# Fargate python-orchard-features SPLITIO_API_KEY secret policy
resource "aws_iam_policy" "python_orchard_features_splitio_policy" {
  name   = "secretsmanager-${var.environment}-python-orchard-features-SPLITIO_API_KEY-ro"
  policy = data.aws_iam_policy_document.python_orchard_features_splitio_policy_document.json
}

# Fargate  SPLITIO_API_KEY secret policy document
data "aws_iam_policy_document" "splitio_secret_policy_document" {
  statement {
    effect = "Allow"

    resources = [
      "arn:aws:secretsmanager:*:*:secret:${var.environment}/split/*",
      "arn:aws:secretsmanager:*:*:secret:${var.environment}/split/",
    ]

    actions = [
      "secretsmanager:ListSecretVersionIds",
      "secretsmanager:GetSecretValue",
      "secretsmanager:GetResourcePolicy",
      "secretsmanager:DescribeSecret",
    ]
  }

  statement {
    effect    = "Allow"
    resources = ["*"]
    actions   = ["secretsmanager:GetRandomPassword"]
  }
}

# Fargate SPLITIO_API_KEY secret policy
resource "aws_iam_policy" "splitio_secret_policy" {
  name   = "SecretsManager-${var.environment}-split-policy"
  policy = data.aws_iam_policy_document.splitio_secret_policy_document.json
}