#!/usr/bin/env bash
# Bash 3 compatible for Darwin

# For getting the latest version of plugins automatically
API_URL="https://api.github.com/repos/pulumi"

# Version of Pulumi from
# https://www.pulumi.com/docs/get-started/install/versions/
VERSION="3.21.0"

# An array of plugin names. The respective repository inside Pulumi's
# Github organization is called pulumi-$name by convention.

pulumi_repos=(
    "auth0"
    "aws"
    "azure"
    "cloudflare"
    "consul"
    "datadog"
    "digitalocean"
    "docker"
    "equinix-metal"
    "gcp"
    "github"
    "gitlab"
    "hcloud"
    "kubernetes"
    "linode"
    "mailgun"
    "mysql"
    "openstack"
    "packet"
    "postgresql"
    "random"
    "vault"
    "vsphere"
)

# Contains latest release ${VERSION} from
# https://github.com/pulumi/pulumi-${NAME}/releases

# Dynamically builds the plugin array, using the API for getting the
# latest version.
plugins=()
for key in "${pulumi_repos[@]}"; do
    repo="pulumi-${key}"
    plugins+=("${key}=$(curl -s ${API_URL}/${repo}/releases/latest | jq -M -r .tag_name | sed 's/v//g')")
    sleep 1
done

function genMainSrc() {
    local url="https://get.pulumi.com/releases/sdk/pulumi-v${VERSION}-${1}-${2}.tar.gz"
    local sha256
    sha256=$(nix-prefetch-url "$url")
    echo "      {"
    echo "        url = \"${url}\";"
    echo "        sha256 = \"$sha256\";"
    echo "      }"
}

function genSrcs() {
    for plugVers in "${plugins[@]}"; do
        local plug=${plugVers%=*}
        local version=${plugVers#*=}
        # url as defined here
        # https://github.com/pulumi/pulumi/blob/06d4dde8898b2a0de2c3c7ff8e45f97495b89d82/pkg/workspace/plugins.go#L197
        local url="https://api.pulumi.com/releases/plugins/pulumi-resource-${plug}-v${version}-${1}-${2}.tar.gz"
        local sha256
        sha256=$(nix-prefetch-url "$url")
        if [ "$sha256" ]; then  # file exists
            echo "      {"
            echo "        url = \"${url}\";"
            echo "        sha256 = \"$sha256\";"
            echo "      }"
        else
            echo "      # pulumi-resource-${plug} skipped (does not exist on remote)"
        fi
    done
}

{
  cat <<EOF
# DO NOT EDIT! This file is generated automatically by update.sh
{ }:
{
  version = "${VERSION}";
  pulumiPkgs = {
EOF

  echo "    x86_64-linux = ["
  genMainSrc "linux" "x64"
  genSrcs "linux" "amd64"
  echo "    ];"

  echo "    x86_64-darwin = ["
  genMainSrc "darwin" "x64"
  genSrcs "darwin" "amd64"
  echo "    ];"

  echo "    aarch64-linux = ["
  genMainSrc "linux" "arm64"
  genSrcs "linux" "arm64"
  echo "    ];"

  echo "    aarch64-darwin = ["
  genMainSrc "darwin" "arm64"
  genSrcs "darwin" "arm64"
  echo "    ];"

  echo "  };"
  echo "}"

} > data.nix