// Package server provides setup utilities for the HTTP server
package server

import (
	"io/fs"
	"net/http"

	"git.haelnorr.com/h/golib/hlog"
	"git.haelnorr.com/h/golib/hws"
	"github.com/pkg/errors"

	"git.haelnorr.com/h/oslstats/internal/config"
	"git.haelnorr.com/h/oslstats/internal/db"
	"git.haelnorr.com/h/oslstats/internal/discord"
	"git.haelnorr.com/h/oslstats/internal/handlers"
	"git.haelnorr.com/h/oslstats/internal/rbac"
	"git.haelnorr.com/h/oslstats/internal/store"
	"git.haelnorr.com/h/oslstats/pkg/slapshotapi"
)

func Setup(
	staticFS *fs.FS,
	cfg *config.Config,
	logger *hlog.Logger,
	conn *db.DB,
	store *store.Store,
	discordAPI *discord.APIClient,
	slapAPI *slapshotapi.SlapAPI,
) (server *hws.Server, err error) {
	if staticFS == nil {
		return nil, errors.New("No filesystem provided")
	}
	fs := http.FS(*staticFS)
	httpServer, err := hws.NewServer(cfg.HWS)
	if err != nil {
		return nil, errors.Wrap(err, "hws.NewServer")
	}

	ignoredPaths := []string{
		"/static/*",
		"/.well-known/*",
		"/ws/notifications",
	}

	auth, err := setupAuth(
		cfg.HWSAuth, logger, conn, httpServer, ignoredPaths)
	if err != nil {
		return nil, errors.Wrap(err, "setupAuth")
	}

	err = httpServer.AddErrorPage(handlers.ErrorPage)
	if err != nil {
		return nil, errors.Wrap(err, "httpServer.AddErrorPage")
	}

	err = httpServer.AddLogger(logger)
	if err != nil {
		return nil, errors.Wrap(err, "httpServer.AddLogger")
	}

	err = httpServer.LoggerIgnorePaths(ignoredPaths...)
	if err != nil {
		return nil, errors.Wrap(err, "httpServer.LoggerIgnorePaths")
	}

	// Initialize permissions checker
	perms, err := rbac.NewChecker(conn, httpServer)
	if err != nil {
		return nil, errors.Wrap(err, "rbac.NewChecker")
	}

	err = addRoutes(httpServer, &fs, cfg, conn, auth, store, discordAPI, slapAPI, perms)
	if err != nil {
		return nil, errors.Wrap(err, "addRoutes")
	}

	err = addMiddleware(httpServer, auth, cfg, perms, discordAPI, store, conn)
	if err != nil {
		return nil, errors.Wrap(err, "addMiddleware")
	}

	return httpServer, nil
}