#!/usr/bin/env elixir

# Setup script for Stripe billing meter

stripe_key = "sk_test_51T7zcQS77kvnTfgyu0DCQU2xVKzeaneVCueHaXV3jsIw6HAwGWWllEL3J8jGZOybHAtPyu6oYIiuvJHhReFtTycE00VrJYJ8Ao"
product_id = "prod_U6DpFdl21ftiDz"

IO.puts("Creating Stripe billing meter...")

# Create billing meter
form_data =
  URI.encode_query(%{
    "display_name" => "Devices Monitored",
    "event_name" => "devices_monitored",
    "default_aggregation[formula]" => "sum",
    "value_settings[event_payload_key]" => "value"
  })

{output, exit_code} =
  System.cmd(
    "curl",
    [
      "-X",
      "POST",
      "https://api.stripe.com/v1/billing/meters",
      "-u",
      "#{stripe_key}:",
      "-H",
      "Stripe-Version: 2024-11-20.acacia",
      "-H",
      "Content-Type: application/x-www-form-urlencoded",
      "-d",
      form_data
    ],
    stderr_to_stdout: true
  )

if exit_code == 0 do
  case Jason.decode(output) do
    {:ok, meter} ->
      IO.puts("\n✓ Billing meter created successfully!")
      IO.puts("  Meter ID: #{meter["id"]}")
      IO.puts("  Display name: #{meter["display_name"]}")
      IO.puts("  Event name: #{meter["event_name"]}")
      IO.puts("\nNow creating metered price...")

      # Create metered price linked to the meter
      price_form =
        URI.encode_query(%{
          "product" => product_id,
          "currency" => "usd",
          "recurring[interval]" => "month",
          "recurring[usage_type]" => "metered",
          "recurring[meter]" => meter["id"],
          "billing_scheme" => "per_unit",
          # $1.00 in cents
          "unit_amount" => "100",
          "nickname" => "Per Device Monthly"
        })

      {price_output, price_exit} =
        System.cmd(
          "curl",
          [
            "-X",
            "POST",
            "https://api.stripe.com/v1/prices",
            "-u",
            "#{stripe_key}:",
            "-H",
            "Stripe-Version: 2024-11-20.acacia",
            "-H",
            "Content-Type: application/x-www-form-urlencoded",
            "-d",
            price_form
          ],
          stderr_to_stdout: true
        )

      if price_exit == 0 do
        case Jason.decode(price_output) do
          {:ok, price} ->
            IO.puts("\n✓ Price created successfully!")
            IO.puts("  Price ID: #{price["id"]}")
            IO.puts("  Amount: $#{price["unit_amount"] / 100}/device/month")
            IO.puts("\n" <> String.duplicate("=", 60))
            IO.puts("SETUP COMPLETE!")
            IO.puts(String.duplicate("=", 60))
            IO.puts("\nAdd these to your Kubernetes secret:")
            IO.puts("  STRIPE_METER_ID=#{meter["id"]}")
            IO.puts("  STRIPE_PRICE_ID=#{price["id"]}")

          {:error, _} ->
            IO.puts("\nError creating price: #{price_output}")
        end
      end

    {:error, _} ->
      IO.puts("\nError: #{output}")
  end
else
  IO.puts("\nCurl failed: #{output}")
end