// Package cli implements the ollama-proxy command-line interface: account
// management subcommands and the `serve` subcommand that starts the proxy.
package cli

import (
	"fmt"
	"os"
)

// Run dispatches to a subcommand based on args[1]. It returns the process exit
// code, or an error that the caller should print before exiting 1.
func Run(args []string) int {
	if len(args) < 2 {
		printRootUsage()
		return 1
	}
	switch args[1] {
	case "serve":
		return RunServe(args[2:])
	case "accounts":
		return RunAccounts(args[2:])
	case "version":
		fmt.Println("ollama-proxy", Version)
		return 0
	case "-h", "--help", "help":
		printRootUsage()
		return 0
	default:
		fmt.Fprintf(os.Stderr, "unknown subcommand: %s\n\n", args[1])
		printRootUsage()
		return 2
	}
}

// Version is overwritten at build time via -ldflags "-X .../cli.Version=...".
var Version = "dev"

func printRootUsage() {
	fmt.Print(`ollama-proxy — multi-account Ollama Cloud reverse proxy

Usage:
  ollama-proxy serve [flags]              Start the proxy server
  ollama-proxy accounts <subcommand>      Manage Ollama Cloud API keys
  ollama-proxy version                    Print version

Accounts subcommands:
  accounts add [API_KEY] [--name <alias>]   Add an account (prompts for key if not given)
  accounts list                             List configured accounts
  accounts remove <id|name>                 Remove an account
  accounts set-base-url <url>               Set the default upstream URL

Environment variables (serve):
  OLLAMA_PROXY_ADDR           listen address (default 127.0.0.1:11435)
  OLLAMA_PROXY_BASE_URL       upstream root (default https://ollama.com)
  OLLAMA_PROXY_COOLDOWN       429 cooldown window (default 60s)
  OLLAMA_PROXY_RETRIES        max failover attempts (default 3)
  OLLAMA_PROXY_LOG_LEVEL     debug|info|warn|error (default info)
`)
}