package main

import (
	"context"
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"os"

	"git.d-ma.be/mathias/hyperguild/internal/tier"
)

const defaultAnthropicProbe = "https://api.anthropic.com"

func runTier(ctx context.Context, args []string, _ io.Reader, stdout, stderr io.Writer) error {
	fs := flag.NewFlagSet("tier", flag.ContinueOnError)
	fs.SetOutput(stderr)
	asJSON := fs.Bool("json", false, "output JSON instead of human-readable")
	if err := fs.Parse(args); err != nil {
		return fmt.Errorf("parse flags: %w", err)
	}

	anthropicURL := os.Getenv("ANTHROPIC_PROBE_URL")
	if anthropicURL == "" {
		anthropicURL = defaultAnthropicProbe
	}
	liteLLMURL := os.Getenv("LITELLM_BASE_URL") // empty → tier falls through to airplane

	info := tier.Detect(ctx, anthropicURL, liteLLMURL)

	if *asJSON {
		enc := json.NewEncoder(stdout)
		enc.SetIndent("", "  ")
		if err := enc.Encode(info); err != nil {
			return fmt.Errorf("encode json: %w", err)
		}
		return nil
	}
	fmt.Fprintf(stdout, "tier %d (%s) managed_agents=%t\n", int(info.Tier), info.Label, info.ManagedAgents) //nolint:errcheck
	return nil
}