// Package httpserver exposes bootstrap health endpoints only. Task, workflow,
// authentication and WebSocket APIs will be implemented in subsequent slices.
package httpserver

import (
	"context"
	"encoding/json"
	"net/http"
	"time"
)

type Checker func(context.Context) error

func New(addr string, ready Checker) *http.Server {
	mux := http.NewServeMux()
	write := func(w http.ResponseWriter, status int, body map[string]string) {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(status)
		_ = json.NewEncoder(w).Encode(body)
	}
	mux.HandleFunc("GET /health/live", func(w http.ResponseWriter, r *http.Request) {
		write(w, http.StatusOK, map[string]string{"status": "alive"})
	})
	mux.HandleFunc("GET /health/ready", func(w http.ResponseWriter, r *http.Request) {
		ctx, cancel := context.WithTimeout(r.Context(), 2*time.Second)
		defer cancel()
		if ready == nil || ready(ctx) != nil {
			write(w, http.StatusServiceUnavailable, map[string]string{"status": "not_ready"})
			return
		}
		write(w, http.StatusOK, map[string]string{"status": "ready", "scope": "database_and_schema"})
	})
	return &http.Server{Addr: addr, Handler: mux, ReadHeaderTimeout: 5 * time.Second, ReadTimeout: 10 * time.Second, WriteTimeout: 10 * time.Second, IdleTimeout: 60 * time.Second, MaxHeaderBytes: 16 << 10}
}