// route-provider: route-proxy's Go half, one binary the node's runtime launches and speaks MCP to over stdio
// through the Go SDK. It runs the SDK's provider helper that answers the consumers of `route` (issue 792), and serves
// the module's tools, which read what the proxy keeps on the bus (issue 774, tools.go).
//
// stdout is the MCP channel, so everything this module says, it says on stderr.
package main

import (
	"context"
	"fmt"
	"os"
	"time"

	stdio "git.novox.be/novox/mesh-sdk/go"
	"git.novox.be/novox/mesh-sdk/go/provider"

	"route-proxy/internal/routestate"
)

func say(format string, args ...any) {
	fmt.Fprintf(os.Stderr, "[route-proxy] "+format+"\n", args...)
}

func main() {
	node := os.Getenv("MESH_NODE")
	if node == "" {
		say("MESH_NODE is not set; answering no consumers")
	} else {
		p := newProvider(node, provider.StateBus(ModuleName), say)
		go func() {
			if err := p.Run(context.Background()); err != nil {
				say("the provider helper stopped: %v", err)
			}
		}()
	}
	tools := front{routes: stdio.State(routestate.RoutesState), unrouted: stdio.State(routestate.UnroutedState),
		now: time.Now}.tools()
	if err := stdio.Serve("", tools); err != nil {
		say("%v", err)
		os.Exit(1)
	}
}