terraform {
  required_providers {
    # official vercel/vercel provider seems less stable
    vercel = {
      source  = "registry.terraform.io/chronark/vercel"
      version = ">=0.10.3"
    }
    digitalocean = {
      source  = "digitalocean/digitalocean"
      version = "~> 2.0"
    }
    heroku = {
      source  = "heroku/heroku"
      version = "~> 5.0.2"
    }
    local = {
      source  = "hashicorp/local"
      version = "~> 2"
    }
  }
}

provider "vercel" {
  token = var.vercel_api_token
}

provider "digitalocean" {
  token = var.digital_ocean_token
}

provider "heroku" {
  email   = var.heroku_email
  api_key = var.heroku_api_key
}

resource "digitalocean_database_cluster" "metaforecast_db" {
  name       = "postgres-green"
  engine     = "pg"
  size       = "db-s-1vcpu-1gb"
  region     = "nyc1"
  node_count = 1
  version    = 14
}

locals {
  generated_env = merge(var.metaforecast_env, {
    # should we bring proper DO certificates to prod instead?
    DIGITALOCEAN_POSTGRES = replace(digitalocean_database_cluster.metaforecast_db.uri, "/\\?sslmode=require$/", "")
  })
}

resource "heroku_app" "metaforecast_backend" {
  name   = "metaforecast-backend"
  region = "us"

  config_vars = local.generated_env
}

resource "vercel_project" "metaforecast" {
  name      = "metaforecast"
  team_id   = var.vercel_team
  framework = "nextjs"

  git_repository {
    type = "github"
    repo = "quantified-uncertainty/metaforecast"
  }

  domain {
    name = "metaforecast.org"
  }

  domain {
    name                 = "www.metaforecast.org"
    redirect             = "metaforecast.org"
    redirect_status_code = 308
  }
}

resource "vercel_env" "metaforecast" {
  project_id = vercel_project.metaforecast.id
  team_id    = var.vercel_team
  type       = "plain"
  for_each   = local.generated_env
  key        = each.key
  value      = each.value
  target     = ["preview", "production"]
}

# should probably be replaced with local bash script
# resource "local_file" "foo" {
#   content         = join("", concat(["# generated by terraform\n"], [for k, v in var.metaforecast_env : "${k} = \"${v}\"\n"]))
#   filename        = "${path.module}/../.env.prod"
#   file_permission = "0644"
# }