package server

import (
	"git.solsynth.dev/hydrogen/interactive/pkg"
	"github.com/gofiber/fiber/v2/middleware/favicon"
	"net/http"
	"strings"
	"time"

	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/middleware/cache"
	"github.com/gofiber/fiber/v2/middleware/cors"
	"github.com/gofiber/fiber/v2/middleware/idempotency"
	"github.com/gofiber/fiber/v2/middleware/logger"
	"github.com/gofiber/template/html/v2"
	jsoniter "github.com/json-iterator/go"
	"github.com/rs/zerolog/log"
	"github.com/spf13/viper"
)

var A *fiber.App

func NewServer() {
	templates := html.NewFileSystem(http.FS(pkg.FS), ".gohtml")

	A = fiber.New(fiber.Config{
		DisableStartupMessage: true,
		EnableIPValidation:    true,
		ServerHeader:          "Hydrogen.Interactive",
		AppName:               "Hydrogen.Interactive",
		ProxyHeader:           fiber.HeaderXForwardedFor,
		JSONEncoder:           jsoniter.ConfigCompatibleWithStandardLibrary.Marshal,
		JSONDecoder:           jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal,
		BodyLimit:             50 * 1024 * 1024,
		EnablePrintRoutes:     viper.GetBool("debug.print_routes"),
		Views:                 templates,
		ViewsLayout:           "views/index",
	})

	A.Use(idempotency.New())
	A.Use(cors.New(cors.Config{
		AllowCredentials: true,
		AllowMethods: strings.Join([]string{
			fiber.MethodGet,
			fiber.MethodPost,
			fiber.MethodHead,
			fiber.MethodOptions,
			fiber.MethodPut,
			fiber.MethodDelete,
			fiber.MethodPatch,
		}, ","),
		AllowOriginsFunc: func(origin string) bool {
			return true
		},
	}))

	A.Use(logger.New(logger.Config{
		Format: "${status} | ${latency} | ${method} ${path}\n",
		Output: log.Logger,
	}))

	A.Get("/.well-known", getMetadata)

	api := A.Group("/api").Name("API")
	{
		api.Get("/users/me", authMiddleware, getUserinfo)
		api.Get("/users/:accountId", getOthersInfo)
		api.Get("/users/:accountId/follow", authMiddleware, getAccountFollowed)
		api.Post("/users/:accountId/follow", authMiddleware, doFollowAccount)

		api.Get("/attachments/o/:fileId", cache.New(cache.Config{
			Expiration:   365 * 24 * time.Hour,
			CacheControl: true,
		}), readAttachment)
		api.Post("/attachments", authMiddleware, uploadAttachment)
		api.Delete("/attachments/:id", authMiddleware, deleteAttachment)

		api.Get("/feed", listFeed)

		posts := api.Group("/p/:postType").Use(useDynamicContext).Name("Dataset Universal API")
		{
			posts.Get("/", listPost)
			posts.Get("/:postId", getPost)
			posts.Post("/:postId/react", authMiddleware, reactPost)
			posts.Get("/:postId/comments", listComment)
			posts.Post("/:postId/comments", authMiddleware, createComment)
		}

		moments := api.Group("/p/moments").Name("Moments API")
		{
			moments.Post("/", authMiddleware, createMoment)
			moments.Put("/:momentId", authMiddleware, editMoment)
			moments.Delete("/:momentId", authMiddleware, deleteMoment)
		}

		articles := api.Group("/p/articles").Name("Articles API")
		{
			articles.Post("/", authMiddleware, createArticle)
			articles.Put("/:articleId", authMiddleware, editArticle)
			articles.Delete("/:articleId", authMiddleware, deleteArticle)
		}

		comments := api.Group("/p/comments").Name("Comments API")
		{
			comments.Put("/:commentId", authMiddleware, editComment)
			comments.Delete("/:commentId", authMiddleware, deleteComment)
		}

		api.Get("/categories", listCategories)
		api.Post("/categories", authMiddleware, newCategory)
		api.Put("/categories/:categoryId", authMiddleware, editCategory)
		api.Delete("/categories/:categoryId", authMiddleware, deleteCategory)

		realms := api.Group("/realms").Name("Realms API")
		{
			realms.Get("/", listRealm)
			realms.Get("/me", authMiddleware, listOwnedRealm)
			realms.Get("/me/available", authMiddleware, listAvailableRealm)
			realms.Get("/:realmId", getRealm)
			realms.Get("/:realmId/members", listRealmMembers)
			realms.Post("/", authMiddleware, createRealm)
			realms.Post("/:realmId/invite", authMiddleware, inviteRealm)
			realms.Post("/:realmId/kick", authMiddleware, kickRealm)
			realms.Put("/:realmId", authMiddleware, editRealm)
			realms.Delete("/:realmId", authMiddleware, deleteRealm)
		}
	}

	A.Use(favicon.New(favicon.Config{
		FileSystem: http.FS(pkg.FS),
		File:       "views/favicon.png",
		URL:        "/favicon.png",
	}))

	A.Get("/", func(c *fiber.Ctx) error {
		return c.Render("views/open", fiber.Map{
			"frontend": viper.GetString("frontend"),
		})
	})
}

func Listen() {
	if err := A.Listen(viper.GetString("bind")); err != nil {
		log.Fatal().Err(err).Msg("An error occurred when starting server...")
	}
}