//go:generate go run github.com/UnnoTed/fileb0x b0x.yaml
package modweb

import (
	"git.ddd.rip/ptrcnull/modweb/static"
	"git.ddd.rip/ptrcnull/modweb/utils"
	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/middleware/session"
	"github.com/gofiber/template/html"
)

type App struct {
	Config           Config
	modules          map[string]Module
	fiber            *fiber.App
	sessions         *session.Store
	authHandlers     []AuthHandler
	viewsFs          *utils.JoinedFilesystem
	homepage         string
	homepageHandlers []func(map[string]interface{})
}

func (app *App) data(ctx *fiber.Ctx, d fiber.Map) fiber.Map {
	base := fiber.Map{
		"app":     app,
		"modules": app.modules,
		"auth":    app.authHandlers,
	}
	for k, v := range d {
		base[k] = v
	}
	sess, _ := app.sessions.Get(ctx)
	if _, ok := sess.Get("user:id").(string); ok {
		user := &User{}
		user.Load(sess)
		base["user"] = user
	}

	return base
}

func New(configs ...Config) *App {
	viewsFs := utils.JoinedFS(static.HTTP)
	views := html.NewFileSystem(viewsFs, ".html")
	views.Reload(true)
	app := &App{
		fiber:            fiber.New(fiber.Config{Views: views}),
		sessions:         session.New(),
		modules:          map[string]Module{},
		viewsFs:          viewsFs,
		homepage:         "homepage",
		homepageHandlers: []func(map[string]interface{}){},
	}
	if len(configs) > 0 {
		app.Config = configs[0]
	}

	app.fiber.Get("/", func(ctx *fiber.Ctx) error {
		data := app.data(ctx, fiber.Map{
			"title": "Homepage",
		})
		if app.homepageHandlers != nil && len(app.homepageHandlers) > 0 {
			for _, fun := range app.homepageHandlers {
				fun(data)
			}
		}
		return ctx.Render(app.homepage, data, "layouts/main")
	})

	app.fiber.Get("/logout", func(ctx *fiber.Ctx) error {
		store, _ := app.sessions.Get(ctx)
		store.Destroy()
		return ctx.Redirect("/")
	})

	return app
}

func (app *App) Register(module Module) {
	app.modules[module.Name()] = module
	module.Init(&ModuleManager{module, app})
	if modAuth, ok := module.(AuthHandler); ok {
		app.authHandlers = append(app.authHandlers, modAuth)
	}
}

func (app *App) Run(addr string) error {
	return app.fiber.Listen(addr)
}

func (app *App) AuthSupported() bool {
	return len(app.authHandlers) > 0
}

func (app *App) SetSessionConfig(config session.Config) {
	app.sessions = session.New(config)
}