provider "aws" {
  region = "eu-west-1"
}

####################################################
# Lambda Function (building from source)
####################################################

module "lambda_function" {
  source  = "terraform-aws-modules/lambda/aws"
  version = "~> 4.0"

  function_name = "${random_pet.this.id}-lambda"
  description   = "My awesome lambda function"
  handler       = "index.lambda_handler"
  runtime       = "python3.8"
  publish       = true

  source_path = "${path.module}/../terraform-fixtures/python"

  allowed_triggers = {
    AllowExecutionFromAPIGateway = {
      service    = "apigateway"
      source_arn = "${module.api_gateway.apigatewayv2_api_execution_arn}/*/*"
    }
  }

  tags = {
    Pattern = "terraform-apigw-http-lambda"
    Module  = "lambda_function"
  }
}

###################
# HTTP API Gateway
###################

module "api_gateway" {
  source  = "terraform-aws-modules/apigateway-v2/aws"
  version = "~> 2.0"

  name          = "${random_pet.this.id}-http"
  description   = "My awesome HTTP API Gateway"
  protocol_type = "HTTP"

  create_api_domain_name = false

  cors_configuration = {
    allow_headers = ["content-type", "x-amz-date", "authorization", "x-api-key", "x-amz-security-token", "x-amz-user-agent"]
    allow_methods = ["*"]
    allow_origins = ["*"]
  }

  integrations = {
    "ANY /" = {
      lambda_arn             = module.lambda_function.lambda_function_arn
      payload_format_version = "2.0"
    }
  }

  tags = {
    Pattern = "terraform-apigw-http-lambda"
    Module  = "api_gateway"
  }
}

##################
# Extra resources
##################

resource "random_pet" "this" {
  length = 2
}