package routes

import (
	"bytes"
	"fmt"
	"log"
	"time"

	"git.phc.dm.unipi.it/phc/storage/config"
	"git.phc.dm.unipi.it/phc/storage/database"
	"git.phc.dm.unipi.it/phc/storage/utils"
	"github.com/gofiber/fiber/v2"
)

func (r *Router) Api(api fiber.Router) {
	sessions := map[string]struct{}{}

	api.Post("/login", func(c *fiber.Ctx) error {
		var form struct {
			Password string `form:"password"`
		}

		if err := c.BodyParser(&form); err != nil {
			return err
		}

		if form.Password == config.AdminPassword {
			token := utils.GenerateRandomString(32)
			sessions[token] = struct{}{}

			c.Cookie(&fiber.Cookie{
				Name:    "sid",
				Value:   token,
				Path:    "/",
				Expires: time.Now().Add(3 * 24 * time.Hour),
			})
		}

		return c.JSON("ok")
	})

	api.Get("/status", func(c *fiber.Ctx) error {
		return c.JSON("ok")
	})

	api.Get("/current-user", func(c *fiber.Ctx) error {
		if _, found := sessions[c.Cookies("sid")]; !found {
			return c.JSON("anonymous")
		}

		return c.JSON("admin")
	})

	api.Get("/dashboard-state", func(c *fiber.Ctx) error {
		state, err := r.Database.GetDashboardState()
		if err != nil {
			return err
		}

		return c.JSON(state)
	})

	api.Post("/dashboard-state", func(c *fiber.Ctx) error {
		if _, found := sessions[c.Cookies("sid")]; !found {
			return fmt.Errorf("invalid session token")
		}

		var state database.DashboardState

		if err := c.BodyParser(&state); err != nil {
			return err
		}

		if err := r.Database.SetDashboardState(state); err != nil {
			return err
		}

		return c.JSON("ok")
	})

	api.Get("/buckets", func(c *fiber.Ctx) error {
		buckets, err := r.Database.AllBuckets()
		if err != nil {
			return err
		}

		return c.JSON(buckets)
	})

	api.Post("/buckets", func(c *fiber.Ctx) error {
		var req struct {
			Bucket string `json:"bucket"`
			Path   string `json:"path"`
		}

		log.Printf("%v", string(c.Body()))

		if err := c.BodyParser(&req); err != nil {
			return err
		}

		opts := []any{}
		if req.Path != "" {
			opts = append(opts, req.Path)
		}

		if err := r.Database.CreateBucket(req.Bucket, opts...); err != nil {
			return err
		}

		return c.JSON("ok")
	})

	api.Get("/buckets/:bucket", func(c *fiber.Ctx) error {
		bucket := c.Params("bucket")

		objects, err := r.Database.AllBucketObjects(bucket)
		if err != nil {
			return err
		}

		return c.JSON(objects)
	})

	api.Post("/buckets/:bucket", func(c *fiber.Ctx) error {
		bucket := c.Params("bucket")

		ff, err := c.FormFile("file")
		if err != nil {
			return err
		}

		mf, err := ff.Open()
		if err != nil {
			return err
		}

		id, err := r.Database.CreateBucketObject(bucket, mf)
		if err != nil {
			return err
		}

		return c.JSON(fiber.Map{
			"bucket": bucket,
			"id":     id,
		})
	})

	api.Get("/buckets/:bucket/:id", func(c *fiber.Ctx) error {
		bucket := c.Params("bucket")
		id := c.Params("id")

		buf := &bytes.Buffer{}

		if err := r.Database.GetBucketObject(bucket, id, buf); err != nil {
			return err
		}

		return c.SendStream(buf)
	})
}