// Package api exposes the HTTP control-plane used by the MCP gateway
// and the orchestrator dashboard.
package api

import (
	"fmt"
	"net/http"

	"forge.secuaas.ovh/olivier/claude-failover/internal/state"
)

const version = "0.1.0"

// Server is a minimal HTTP server exposing /health and /status.
type Server struct {
	addr  string
	state *state.State
}

// New creates a Server listening on addr.
func New(addr string, s *state.State) *Server {
	return &Server{addr: addr, state: s}
}

// Start registers routes and begins serving. Blocks until the listener fails.
func (s *Server) Start() error {
	mux := http.NewServeMux()
	mux.HandleFunc("/health", s.handleHealth)
	mux.HandleFunc("/status", s.handleStatus)
	return http.ListenAndServe(s.addr, mux)
}

func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	fmt.Fprintf(w, `{"status":"ok","version":%q}`, version)
}

func (s *Server) handleStatus(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	w.Write(s.state.JSON())
}