package api

import (
	"fmt"
	"github.com/gofiber/fiber/v2"
	"penahub.gitlab.yandexcloud.net/backend/penahub_disk/dal"
	"strings"
)

type ReqGetResources struct {
	Path         string `query:"path"`
	Recursive    bool   `query:"recursive"`
	WithVersions bool   `query:"with_versions"`
}

// GetResources - получить информацию о папке или файле по пути
func (a *API) GetResources(c *fiber.Ctx) error {
	var req ReqGetResources

	err := c.QueryParser(&req)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)

	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	result := client.GetResourcesList(c.Context(), req.Path, req.Recursive, req.WithVersions)

	if len(result) == 0 {
		return fiber.NewError(fiber.StatusNotFound, "resource not found")
	}

	return c.Status(fiber.StatusOK).JSON(result)
}

type ReqPutResources struct {
	Path string `query:"path" validate:"required"`
}

// PutResources - создать папку
func (a *API) PutResources(c *fiber.Ctx) error {
	var req ReqPutResources

	err := c.QueryParser(&req)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	errValidate := ValidateStruct(c.Context(), &req)

	if errValidate != nil {
		return c.Status(fiber.StatusBadRequest).JSON(errValidate)
	}

	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)

	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	err = client.PutResources(c.Context(), req.Path)
	if err != nil {
		return err
	}

	return c.SendStatus(fiber.StatusCreated)
}

type ReqUploadResources struct {
	Path      string `json:"path" validate:"required" `
	Overwrite bool   `json:"overwrite"`
}

// UploadResources - загрузить ресурс в хранилище.
// Ограничение на загрузку 50МБ установлено в fiber.Config.BodyLimit
func (a *API) UploadResources(c *fiber.Ctx) error {
	var req ReqUploadResources

	err := c.BodyParser(&req)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	errValidate := ValidateStruct(c.Context(), &req)

	if errValidate != nil {
		return c.Status(fiber.StatusBadRequest).JSON(errValidate)
	}

	formFile, err := c.FormFile("file")
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	// make vars for upload
	contentType := formFile.Header.Get("Content-Type")
	size := formFile.Size

	var fullPath string
	if !strings.HasSuffix(req.Path, "/") {
		fullPath = fmt.Sprintf("%v/%v", req.Path, formFile.Filename)
	} else {
		fullPath = req.Path + formFile.Filename
	}

	file, err := formFile.Open()
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	// connect to minio
	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

fmt.Println("VAAAAALUEABLE", file, size, fullPath, contentType)
	// upload file
	err = client.UploadResources(c.Context(), file, size, fullPath, contentType)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	return c.SendStatus(fiber.StatusCreated)
}

type ReqDownloadResources struct {
	Path string `query:"path" validate:"required"`
}

type RespDownloadResources struct {
	Href string `json:"href"`
}

// DownloadResources - получить ссылку на скачивание файла
func (a *API) DownloadResources(c *fiber.Ctx) error {
	var req ReqDownloadResources

	err := c.QueryParser(&req)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	errValidate := ValidateStruct(c.Context(), &req)

	if errValidate != nil {
		return c.Status(fiber.StatusBadRequest).JSON(errValidate)
	}

	// connect to minio
	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	result, err := client.DownloadResources(c.Context(), req.Path)

	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	return c.Status(fiber.StatusOK).JSON(&RespDownloadResources{Href: result})
}

type ReqCopyResources struct {
	From      string `query:"from" validate:"required"` // Путь к копируемому ресурсу
	Path      string `query:"path" validate:"required"` // Путь к создаваемому ресурсу
	Overwrite bool   `query:"overwrite"`                // Перезаписать существующий ресурс
}

// CopyResources - скопировать ресурс
func (a *API) CopyResources(c *fiber.Ctx) error {
	var req ReqCopyResources

	err := c.QueryParser(&req)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	errValidate := ValidateStruct(c.Context(), &req)

	if errValidate != nil {
		return c.Status(fiber.StatusBadRequest).JSON(errValidate)
	}

	// connect to minio
	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	if !req.Overwrite {
		list := client.GetResourcesList(c.Context(), req.Path, false, false)
		if list != nil {
			return fiber.NewError(fiber.StatusLocked, "file already exist")
		}
	}

	err = client.CopyResources(c.Context(), req.From, req.Path)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	return c.SendStatus(fiber.StatusCreated)
}

type ReqMoveResources struct {
	From      string `query:"from" validate:"required"` // Путь к перемещаемому ресурсу
	Path      string `query:"path" validate:"required"` // Путь к создаваемому ресурсу
	Overwrite bool   `query:"overwrite"`                // Перезаписать существующий ресурс
}

// MoveResources - переместить ресурс
func (a *API) MoveResources(c *fiber.Ctx) error {
	var req ReqMoveResources

	err := c.QueryParser(&req)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	errValidate := ValidateStruct(c.Context(), &req)

	if errValidate != nil {
		return c.Status(fiber.StatusBadRequest).JSON(errValidate)
	}

	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	if !req.Overwrite {
		list := client.GetResourcesList(c.Context(), req.Path, false, false)
		if list != nil {
			return fiber.NewError(fiber.StatusLocked, "file already exist")
		}
	}

	err = client.MoveResources(c.Context(), req.From, req.Path)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	return c.SendStatus(fiber.StatusCreated)
}

type ReqDeleteResources struct {
	Path        string `query:"path" validate:"required"` // Путь к удаляемому ресурсу
	Permanently bool   `query:"permanently"`              // Удалить все версии
}

// DeleteResources - удалить ресурс
func (a *API) DeleteResources(c *fiber.Ctx) error {
	var req ReqDeleteResources

	err := c.QueryParser(&req)
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	errValidate := ValidateStruct(c.Context(), &req)

	if errValidate != nil {
		return c.Status(fiber.StatusBadRequest).JSON(errValidate)
	}

	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	err = client.DeleteResources(c.Context(), req.Path, req.Permanently)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	return c.SendStatus(fiber.StatusNoContent)
}

type ReqPublishResources struct {
	Path string `query:"path" validate:"required"` // Путь публикуемого ресурса
}

type RespPublishResources struct {
	Href string `json:"href"`
}

// PublishResources - опубликовать ресурс
func (a *API) PublishResources(c *fiber.Ctx) error {
	var req ReqDeleteResources

	err := c.QueryParser(&req)
	if err != nil {
		if err != nil {
			return fiber.NewError(fiber.StatusBadRequest, err.Error())
		}
	}

	errValidate := ValidateStruct(c.Context(), &req)

	if errValidate != nil {
		return c.Status(fiber.StatusBadRequest).JSON(errValidate)
	}

	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	href, err := client.PublishResources(c.Context(), req.Path)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	return c.Status(fiber.StatusOK).JSON(&RespPublishResources{Href: href})
}

type ReqUnpublishResources struct {
	Path string `query:"path" validate:"required"`
}

// UnpublishResources - отменить публикацию ресурса
func (a *API) UnpublishResources(c *fiber.Ctx) error {
	var req ReqUnpublishResources

	err := c.QueryParser(&req)
	if err != nil {
		if err != nil {
			return fiber.NewError(fiber.StatusBadRequest, err.Error())
		}
	}

	errValidate := ValidateStruct(c.Context(), &req)

	if errValidate != nil {
		return c.Status(fiber.StatusBadRequest).JSON(errValidate)
	}

	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	err = client.UnpublishResources(c.Context(), req.Path)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	return c.SendStatus(fiber.StatusOK)
}

// GetPublicResources - получить список опубликованных ресурсов
func (a *API) GetPublicResources(c *fiber.Ctx) error {
	client, err := dal.NewClient(c.Context(), a.logger, c.Locals("userID").(string), a.minio)
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	result, err := client.GetPublicResources(c.Context())
	if err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
	}

	return c.Status(fiber.StatusOK).JSON(result)
}