package crm

import (
	"jannex/admin-dashboard-backend/modules/crm"
	"jannex/admin-dashboard-backend/modules/database"
	"jannex/admin-dashboard-backend/modules/logger"
	"jannex/admin-dashboard-backend/modules/structs"
	"jannex/admin-dashboard-backend/modules/utils"
	"jannex/admin-dashboard-backend/socketclients"

	"git.ex.umbach.dev/Alex/roese-utils/rslogger"
	"git.ex.umbach.dev/Alex/roese-utils/rspagination"
	"github.com/go-sql-driver/mysql"
	"github.com/gofiber/fiber/v2"
	"github.com/google/uuid"
	"gorm.io/gorm"
)

func GetCrmTypeCustomers(c *fiber.Ctx) error {
	// swagger:operation GET /crm/pipeline/{type}/{dealPhase} crm crmGetCrmCustomers
	// ---
	// summary: Get crm customers
	// produces:
	// - application/json
	// parameters:
	// - name: page
	//   in: query
	//   description: Page number
	// responses:
	//   '200':
	//     description: Crm customers
	//     schema:
	//       "$ref": "#/definitions/CrmTableCustomerResponse"
	//   '400':
	//     description: Invalid request query
	//   '401':
	//     description: No permissions
	//   '404':
	//     description: Crm type not found
	//   '422':
	//     description: Deal phase not set
	//   '500':
	//     description: Failed to get crm customers

	var params structs.CrmTypeCustomerRequest

	if err := c.ParamsParser(&params); err != nil {
		return c.SendStatus(fiber.StatusBadRequest)
	}

	if !socketclients.HasPermission(c.Locals("userId").(string), utils.PermissionCrmCustomersView) {
		return c.SendStatus(fiber.StatusUnauthorized)
	}

	var query rspagination.PageQuery

	if err := c.QueryParser(&query); err != nil {
		return c.SendStatus(fiber.StatusBadRequest)
	}

	if params.Type == utils.CrmPipelineCustomers {
		return c.JSON(structs.CrmTableCustomerResponse{
			Customers: crm.GetTableCustomers(params, query),
			TotalPages: rspagination.GetTotalPages(database.DB,
				utils.CrmCustomersPaginationLimit,
				[]structs.CrmCustomer{},
				nil),
		})
	}

	// Check if deal phase is set
	if params.DealPhase == 0 {
		return c.SendStatus(fiber.StatusUnprocessableEntity)
	}

	if params.Type == utils.CrmPipelineDmcPipeline {
		return c.JSON(structs.CrmTableCustomerResponse{
			Customers: crm.GetTableCustomers(params, query),
			TotalPages: rspagination.GetTotalPages(database.DB,
				utils.CrmCustomersPaginationLimit,
				[]structs.CrmCustomer{},
				structs.CrmCustomer{
					Pipeline:  utils.CrmPipelineDmcPipelineInt,
					DealPhase: params.DealPhase}),
		})
	}

	if params.Type == utils.CrmPipelineSetterCloser {
		return c.JSON(structs.CrmTableCustomerResponse{
			Customers: crm.GetTableCustomers(params, query),
			TotalPages: rspagination.GetTotalPages(database.DB,
				utils.CrmCustomersPaginationLimit,
				[]structs.CrmCustomer{},
				structs.CrmCustomer{
					Pipeline:  utils.CrmPipelineSetterCloserInt,
					DealPhase: params.DealPhase}),
		})
	}

	return c.SendStatus(fiber.StatusNotFound)
}

func GetCrmCustomer(c *fiber.Ctx) error {
	// swagger:operation GET /crm/customer/view/{id} crm crmGetCrmCustomer
	// ---
	// summary: Get crm customer
	// produces:
	// - application/json
	// parameters:
	// - name: id
	//   in: path
	//   description: Customer id
	// responses:
	//   '200':
	//     description: Crm customer
	//     schema:
	//       "$ref": "#/definitions/CrmCustomer"
	//   '400':
	//     description: Invalid request query
	//   '401':
	//     description: No permissions
	//   '404':
	//     description: Crm customer not found
	//   '500':
	//     description: Failed to get crm customer

	var params structs.CrmGetCustomerRequest

	if err := c.ParamsParser(&params); err != nil {
		return c.SendStatus(fiber.StatusBadRequest)
	}

	if !socketclients.HasPermission(c.Locals("userId").(string), utils.PermissionCrmCustomersView) {
		return c.SendStatus(fiber.StatusUnauthorized)
	}

	var customer structs.CrmCustomer

	database.DB.First(&customer, "id = ?", params.Id)

	if customer.Id != params.Id {
		return c.SendStatus(fiber.StatusNotFound)
	}

	return c.JSON(customer)
}

func UpdateCrmCustomer(c *fiber.Ctx) error {
	// swagger:operation POST /crm/customer/update/{id} crm crmUpdateCrmCustomer
	// ---
	// summary: Update crm customer
	// produces:
	// - application/json
	// parameters:
	// - name: id
	//   in: path
	//   description: Customer id
	// - name: crmCustomer
	//   in: body
	//   description: Crm customer
	//   schema:
	//     "$ref": "#/definitions/CrmCustomer"
	// responses:
	//   '200':
	//     description: Crm customer
	//     schema:
	//       "$ref": "#/definitions/CrmCustomer"
	//   '400':
	//     description: Invalid request query
	//   '401':
	//     description: No permissions
	//   '404':
	//     description: Crm customer not found
	//   '409':
	//     description: Crm customer with the company name already exists
	//   '500':
	//     description: Failed to update crm customer

	var params structs.CrmGetCustomerRequest

	if err := c.ParamsParser(&params); err != nil {
		return c.SendStatus(fiber.StatusBadRequest)
	}

	if !socketclients.HasPermission(c.Locals("userId").(string), utils.PermissionCrmCustomersEdit) {
		return c.SendStatus(fiber.StatusUnauthorized)
	}

	var customer structs.CrmCustomer

	database.DB.First(&customer, "id = ?", params.Id)

	if customer.Id != params.Id {
		return c.SendStatus(fiber.StatusNotFound)
	}

	var crmCustomer map[string]interface{}

	if err := c.BodyParser(&crmCustomer); err != nil {
		return c.SendStatus(fiber.StatusBadRequest)
	}

	result := database.DB.Model(&structs.CrmCustomer{}).
		Where("id = ?", params.Id).
		Select("*"). // update all fields (even if they are empty)
		Updates(crmCustomer)

	if err := handleError(result, c); err != nil {
		return err
	}

	crmCustomer["Id"] = params.Id

	socketclients.BroadcastMessageToTopicStartsWith(utils.SubscribedTopicCrm, structs.SendSocketMessage{
		Cmd:  utils.SentCmdCrmCustomerUpdated,
		Body: crmCustomer,
	})

	logger.AddCrmLog(rslogger.LogTypeInfo, "Crm customer id: %s updated with following changes: %v", params.Id, customer)

	return c.JSON(crmCustomer)
}

func CreateCrmCustomer(c *fiber.Ctx) error {
	// swagger:operation POST /crm/customer/create crm crmCreateCrmCustomer
	// ---
	// summary: Create crm customer
	// produces:
	// - application/json
	// parameters:
	// - name: crmCustomer
	//   in: body
	//   description: Crm customer
	//   schema:
	//     "$ref": "#/definitions/CrmCustomer"
	// responses:
	//   '200':
	//     description: Crm customer
	//     schema:
	//       "$ref": "#/definitions/CrmCustomer"
	//   '400':
	//     description: Invalid request query
	//   '401':
	//     description: No permissions
	//   '409':
	//     description: Crm customer with the company name already exists
	//   '500':
	//     description: Failed to create crm customer

	if !socketclients.HasPermission(c.Locals("userId").(string), utils.PermissionCrmCustomersCreate) {
		return c.SendStatus(fiber.StatusUnauthorized)
	}

	var crmCustomer map[string]interface{}

	if err := c.BodyParser(&crmCustomer); err != nil {
		return c.SendStatus(fiber.StatusBadRequest)
	}

	crmCustomer["Id"] = uuid.New().String()

	if crmCustomer["Pipeline"] == nil {
		crmCustomer["Pipeline"] = 1
	}

	if crmCustomer["DealPhase"] == nil {
		crmCustomer["DealPhase"] = 1
	}

	result := database.DB.Model(&structs.CrmCustomer{}).Create(&crmCustomer)

	if err := handleError(result, c); err != nil {
		return err
	}

	socketclients.BroadcastMessageToTopicStartsWith(utils.SubscribedTopicCrm,
		structs.SendSocketMessage{
			Cmd:  utils.SentCmdCrmCustomerCreated,
			Body: crmCustomer,
		})

	logger.AddCrmLog(rslogger.LogTypeInfo, "Crm customer id: %s created with following changes: %v", crmCustomer["Id"], crmCustomer)

	return c.JSON(crmCustomer)
}

func handleError(result *gorm.DB, c *fiber.Ctx) error {
	if result.Error != nil {
		if mysqlErr, ok := result.Error.(*mysql.MySQLError); ok {
			switch mysqlErr.Number {
			case 1062:
				logger.AddCrmLog(rslogger.LogTypeError, "Failed to create crm customer as company name already exists: %v", result.Error.Error())
				return c.SendStatus(fiber.StatusConflict)

			default:
				logger.AddCrmLog(rslogger.LogTypeError, "Failed to create crm customer: %v", result.Error.Error())
				return c.SendStatus(fiber.StatusInternalServerError)
			}
		}

		logger.AddCrmLog(rslogger.LogTypeError, "Failed to create crm customer: %v", result.Error.Error())
		return c.SendStatus(fiber.StatusInternalServerError)
	}

	return nil
}