package users

import (
	"system-trace/core/database"
	"system-trace/core/parsers"
	"system-trace/core/types"

	"github.com/gofiber/fiber/v2"
)

// MARK: GetUsers godoc
// @Summary      Get users (with pagination)
// @Description  Returns array of users and count
// @Tags         users
// @Produce      json
// @Param        count query int true "Count of rows" minimum(10) maximum(100)
// @Param        offset query int true "Rows to skip" minumum(0)
// @Success 		 200 {object} types.JSONPagination
// @Router       /users [get]
func GetUsersHandler(c *fiber.Ctx) error {
	// TODO permission validate
	s, err := parsers.GetSearch(c)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	p, err := parsers.GetPagination(c)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	ob, err := parsers.GetOrderBy(c)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	users, cursor, err := database.FindUsers(s, p, ob)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	return c.Status(fiber.StatusOK).JSON(types.JSONPagination{
		Data:   users,
		Cursor: cursor,
	})
}

// MARK: GetUserByID godoc
// @Summary      Get user by ID
// @Description  Returns user instance
// @Tags         users
// @Produce      json
// @Param        id path int true "User ID" minimum(1)
// @Success 		 200 {object} database.User
// @Router       /users/:id [get]
func GetUserByIDHandler(c *fiber.Ctx) error {
	// TODO permission validate
	id, err := c.ParamsInt("id")
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	user, err := database.FindUserByID(id)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

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

// MARK: CreateUser godoc
// @Summary      Create user
// @Description  Create user with specified data
// @Tags         users
// @Produce      json
// @Param        request body database.User true "Request body"
// @Success 		 200 {object} types.NewCredentials
// @Router       /users [post]
func CreateUserHandler(c *fiber.Ctx) error {
	// TODO permission validate
	u := new(database.User)
	if err := c.BodyParser(u); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	pass, err := resetPassword(u)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	if err := database.InsertUser(u); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	return c.Status(fiber.StatusOK).JSON(types.NewCredentials{
		Email:    u.Email,
		Password: pass,
	})
}

// MARK: UpdateUser godoc
// @Summary      Update user
// @Description  Update user with specified data
// @Tags         users
// @Produce      json
// @Param        request body database.User true "Request body"
// @Success 		 200
// @Router       /users [patch]
func UpdateUserHandler(c *fiber.Ctx) error {
	// TODO permission validate
	u := new(database.User)
	if err := c.BodyParser(u); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	if err := database.UpdateUser(u, []string{"email", "real_name", "group_id"}); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	return c.SendStatus(fiber.StatusOK)
}

// MARK: DeleteUser godoc
// @Summary      Delete user
// @Description  Delete user by ID
// @Tags         users
// @Produce      json
// @Param        id path int true "User ID" minimum(1)
// @Success 		 200
// @Router       /users/:id [delete]
func DeleteUserHandler(c *fiber.Ctx) error {
	// TODO permission validate
	id, err := c.ParamsInt("id")
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	if err = database.DeleteUser(id); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	return c.SendStatus(fiber.StatusOK)
}

// MARK: DeleteUsers godoc
// @Summary      Delete many users
// @Description  Delete users by ID
// @Tags         users
// @Produce      json
// @Param        request body types.ManyIDs true "Request body"
// @Success 		 200
// @Router       /users [delete]
func DeleteUsersHandler(c *fiber.Ctx) error {
	// TODO permission validate
	arr := new(types.ManyIDs)
	if err := c.BodyParser(arr); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	if err := database.DeleteManyUsers(arr.Array); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	return c.SendStatus(fiber.StatusOK)
}

// MARK: BlockUsers godoc
// @Summary      Block many users
// @Description  Block users by ID
// @Tags         users
// @Produce      json
// @Param        request body types.ManyIDs true "Request body"
// @Success 		 200
// @Router       /users/block [patch]
func BlockUsersHandler(c *fiber.Ctx) error {
	// TODO permission validate
	arr, err := parsers.GetManyIDs(c)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	if err := database.BlockManyUsers(arr.Array); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	return c.SendStatus(fiber.StatusOK)
}

// MARK: UnblockUsers godoc
// @Summary      Unblock many users
// @Description  Unblock users by ID
// @Tags         users
// @Produce      json
// @Param        request body types.ManyIDs true "Request body"
// @Success 		 200
// @Router       /users/unblock [patch]
func UnblockUsersHandler(c *fiber.Ctx) error {
	// TODO permission validate
	arr, err := parsers.GetManyIDs(c)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	if err := database.UnblockManyUsers(arr.Array); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	return c.SendStatus(fiber.StatusOK)
}

// MARK: ResetUserPassword godoc
// @Summary      Reset user password
// @Description  Reset user password by user ID
// @Tags         users
// @Produce      json
// @Param        id path int true "User ID" minimum(1)
// @Success 		 200 {object} types.NewCredentials
// @Router       /users/password/:id [patch]
func ResetUserPasswordHandler(c *fiber.Ctx) error {
	// TODO permission validate
	id, err := c.ParamsInt("id")
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	user, err := database.FindUserByID(id)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	pass, err := resetPassword(user)
	if err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	if err := database.UpdateUser(user, []string{"password_hash", "password_length", "is_required_to_set_password"}); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(types.JSONError{
			Error: err.Error(),
		})
	}

	return c.Status(fiber.StatusOK).JSON(types.NewCredentials{
		Email:    user.Email,
		Password: pass,
	})
}