##########
# Defaults
##########

provider "aws" {
  region = var.region
}

terraform {
  required_version = ">= 1.0.0"
}

resource "random_string" "rand6" {
  length  = 6
  special = false
  upper   = false
}

locals {
  git_provider           = element(split("/", var.http_git_clone_url), 2)
  git_protocal           = element(split(":", var.http_git_clone_url), 0)
  git_owner              = element(split("/", var.http_git_clone_url), 3)
  git_repo               = trimsuffix(element(split("/", var.http_git_clone_url), 4), ".git")
  random_project_name    = "${local.git_repo}-${random_string.rand6.result}"
  codebuild_project_name = (var.project_name != "" ? var.project_name : "${local.random_project_name}")
}


resource "aws_codebuild_project" "codebuild_project" {
  name          = local.codebuild_project_name
  description   = local.codebuild_project_name
  build_timeout = "120"
  service_role  = var.create_role_and_policy ? aws_iam_role.codebuild_role[0].arn : var.codebuild_role_arn


  artifacts {
    type = var.artifacts_type
  }

  source {
    type            = "GITHUB"
    location        = "${local.git_protocal}://${local.git_provider}/${local.git_owner}/${local.git_repo}.git"
    git_clone_depth = var.git_clone_depth
    buildspec       = templatefile("${path.cwd}/${var.build_spec_file}", {})
    git_submodules_config {
      fetch_submodules = true
    }
  }

  environment {
    image                       = var.build_image
    type                        = "LINUX_CONTAINER"
    compute_type                = var.compute_type
    image_pull_credentials_type = "CODEBUILD"
    privileged_mode             = true

    dynamic "environment_variable" {
      for_each = var.codebuild_env_vars["LOAD_VARS"] != false ? var.codebuild_env_vars : {}
      content {
        name  = environment_variable.key
        value = environment_variable.value
      }
    }

  }

  logs_config {
    cloudwatch_logs {
      group_name  = "log-group"
      stream_name = "log-stream"
    }

    s3_logs {
      status = "DISABLED"
    }
  }

  tags = merge(var.tags, { "aws-ia_module" = "true" })
}

# IAM
resource "aws_iam_role" "codebuild_role" {
  count = var.create_role_and_policy ? 1 : 0
  name  = "${"${local.codebuild_project_name}"}_codebuild_deploy_role"

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

resource "aws_iam_role_policy_attachment" "codebuild_deploy" {
  role       = aws_iam_role.codebuild_role[0].name
  policy_arn = "arn:aws:iam::aws:policy/AdministratorAccess"
}