package handlers

import (
	"fmt"
	"net/http"
	"strconv"

	"gitea.tecamino.com/paadi/access-handler/models"
	"github.com/gin-gonic/gin"
)

func (aH *AccessHandler) AddRoleTable() error {
	return aH.dbHandler.AddNewTable(models.Role{})
}

func (aH *AccessHandler) AddDefaultRole() (err error) {
	role := "admin"

	// Check if a role with this name already exists
	if aH.dbHandler.Exists(&models.Role{}, "role", role, false) {
		// Found a role → skip creation
		aH.logger.Debug("AddDefaultRole", "role "+role+" exists already")
		return nil
	}

	// Initialize default permissions for admin
	permissions := models.Permissions{}
	aH.logger.Debug("AddDefaultRole", "set default Permissions")
	permissions.DefaultPermissions()

	// Create the default admin role
	aH.dbHandler.AddNewColum(&models.Role{
		Role:        role,
		Permissions: permissions,
	})
	return
}

func (aH *AccessHandler) AddRole(c *gin.Context) {
	var role models.Role
	err := c.BindJSON(&role)
	if err != nil {
		aH.logger.Error("AddRole", err)
		c.JSON(http.StatusBadRequest, models.NewJsonErrorResponse(err))
		return
	}

	if !role.IsValid() {
		aH.logger.Error("AddRole", "user empty")
		c.JSON(http.StatusBadRequest, models.NewJsonMessageResponse("user empty"))
		return
	}

	// Check if a role with this name already exists
	if aH.dbHandler.Exists(&models.Role{}, "role", role.Role, false) {
		aH.logger.Error("AddRole", fmt.Sprintf("role with name %s already exists", role.Role))
		c.JSON(http.StatusBadRequest, models.NewJsonMessageResponse(fmt.Sprintf("role with name %s already exists", role.Role)))
	}

	// Insert new role with provided permissions
	aH.dbHandler.AddNewColum(&models.Role{
		Role:        role.Role,
		Permissions: role.Permissions,
	})
	c.JSON(http.StatusOK, gin.H{
		"message": fmt.Sprintf("role '%s' successfully added", role.Role),
	})
}

func (aH *AccessHandler) GetRole(c *gin.Context) {
	var i int
	var err error
	var roles []models.Role

	role := c.Query("role")
	id := c.Query("id")

	if role != "" {
		err = aH.dbHandler.GetByKey(&roles, "role", role, false)
	} else if id != "" {
		i, err = strconv.Atoi(id)
		if err != nil {
			c.JSON(http.StatusBadRequest, gin.H{
				"message": err.Error(),
			})
			return
		}
		err = aH.dbHandler.GetById(&roles, uint(i))
	} else {
		err = aH.dbHandler.GetById(&roles, 0)

	}

	if err != nil {
		aH.logger.Error("GetRole", err)
		c.JSON(http.StatusInternalServerError, nil)
		return
	}
	c.JSON(http.StatusOK, roles)
}

func (aH *AccessHandler) UpdateRole(c *gin.Context) {
	var role models.Role
	if err := c.BindJSON(&role); err != nil {
		aH.logger.Error("UpdateRole", err)
		c.JSON(http.StatusInternalServerError, nil)
		return
	}
	err := aH.dbHandler.UpdateValuesById(&role, role.Id)
	if err != nil {
		aH.logger.Error("UpdateRole", err)
		c.JSON(http.StatusInternalServerError, nil)
		return
	}
	c.JSON(http.StatusOK, models.NewJsonMessageResponse("successfully updated role '"+role.Role+"'"))
}

func (aH *AccessHandler) DeleteRole(c *gin.Context) {
	queryRole := c.Query("role")
	if queryRole == "" || queryRole == "null" || queryRole == "undefined" {
		aH.logger.Error("DeleteRole", "id query missing or wrong value: "+queryRole)
		c.JSON(http.StatusInternalServerError, nil)
		return
	}

	var request struct {
		Roles []string `json:"roles"`
	}

	err := c.BindJSON(&request)
	if err != nil {
		aH.logger.Error("DeleteRole", err)
		c.JSON(http.StatusBadRequest, nil)
		return
	}

	if len(request.Roles) == 0 {
		aH.logger.Error("DeleteRole", "no ids given to be deleted")
		c.JSON(http.StatusBadRequest, models.NewJsonMessageResponse("no roles given to be deleted"))
		return
	}

	var ownRole string

	for _, role := range request.Roles {
		if queryRole == role {
			ownRole = role
			continue
		}
		err = aH.dbHandler.DeleteByKey(&models.Role{}, "role", role, false)
		if err != nil {
			aH.logger.Error("DeleteRole", err)
			c.JSON(http.StatusInternalServerError, nil)
			return
		}
	}

	if ownRole != "" {
		aH.logger.Error("DeleteRole", "can not delete logged in role id: "+ownRole)
		c.JSON(http.StatusBadRequest, gin.H{
			"message": "can not delete logged in role id: " + ownRole,
			"role":    ownRole,
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"message": "role(s) deleted",
	})
}