// Command mglpi-mcp is the GLPI MCP server (stdio JSON-RPC, stdlib
// only). Connection settings come from MGLPI_URL / MGLPI_APP_TOKEN /
// MGLPI_USER_TOKEN env vars (plus optional MGLPI_PROFILE_ID for agent
// mode) or a 0600 --config env file — the same discipline as mglpi.
package main

import (
	"context"
	"flag"
	"fmt"
	"os"

	"git.knownelement.com/ukrrs/mopac-glpi-go/glpi"
	"git.knownelement.com/ukrrs/mopac-glpi-go/internal/config"
	"git.knownelement.com/ukrrs/mopac-glpi-go/internal/mcp"
)

func main() {
	cfgPath := flag.String("config", "", "env file with MGLPI_URL/MGLPI_APP_TOKEN/MGLPI_USER_TOKEN (must be 0600)")
	profile := flag.Int("profile", 0, "agent profile id to switch to after InitSession (overrides MGLPI_PROFILE_ID)")
	flag.Parse()

	if *cfgPath == "" {
		*cfgPath = os.Getenv("MGLPI_CONFIG")
	}
	cfg, _, err := config.Load(*cfgPath)
	if err != nil {
		fmt.Fprintf(os.Stderr, "mglpi-mcp: %v\n", err)
		os.Exit(1)
	}
	if *profile == 0 {
		*profile = cfg.ProfileID
	}
	c := glpi.New(glpi.Config{
		BaseURL:   cfg.BaseURL,
		AppToken:  cfg.AppToken,
		UserToken: cfg.UserToken,
	})
	if err := mcp.New(c, *profile).Serve(os.Stdin, os.Stdout); err != nil {
		fmt.Fprintf(os.Stderr, "mglpi-mcp: %v\n", err)
		os.Exit(1)
	}
	// Graceful close: release the session when the peer hangs up.
	if err := c.KillSession(context.Background()); err != nil {
		fmt.Fprintf(os.Stderr, "mglpi-mcp: killSession: %v\n", err)
	}
}