"use client";

import { createRole, updateRole, useRoleItem } from "@/hooks/role";
import { Module, Permission, Role } from "@/lib/interfaces";
import { usePathname, useRouter } from "next/navigation";
import Link from "next/link";
import { useEffect, useState } from "react";
import { Status } from "@/lib/Enums";
import { Applications } from "@/lib/Enums";
import { usePermissionItems } from "@/hooks/permission";
import { useModuleItems } from "@/hooks/module";

export default function RoleDetails() {
  const [item, setItem] = useState<Role>();
  const pathName = usePathname();
  const router = useRouter();
  let isUpdateMode = false;
  let selectedApplications: string[];
  const [permissions, setPermissions] = useState<Permission[]>([]);
  const [modules, setModules] = useState<Module[]>([]);
  let initialPermissions: string[];
  let initialApplications: string[];
  let initialModules: string[];

  const setSelectedValuesGlobal = (values: string[]) => {
    selectedApplications = values;
  };

  let selectedPermissions: string[];
  const setSelectedPermissionsGlobal = (values: string[]) => {
    selectedPermissions = values;
  };

  let selectedModules: string[];
  const setSelectedModulesGlobal = (values: string[]) => {
    selectedModules = values;
  };

  const formatDate = (date: Date) =>
    new Intl.DateTimeFormat("en-US").format(date);

  const StatusDropDown = (data: any) => {
    return (
      <select
        id="status"
        className="p-3 rounded"
        defaultValue={data.statusCode}
      >
        <option value={Status.Active}>{Status.Active}</option>
        <option value={Status.Inactive}>{Status.Inactive}</option>
        <option value={Status.Deleted}>{Status.Deleted}</option>
      </select>
    );
  };

  const ApplicationsDropDown = ({
    selectedApplications,
  }: {
    selectedApplications: string[];
  }) => {
    const [localSelectedValues, setLocalSelectedValues] =
      useState<string[]>(selectedApplications);

    const handleSelection = (event: React.ChangeEvent<HTMLSelectElement>) => {
      const selectedOptions = Array.from(event.target.selectedOptions);
      const values = selectedOptions.map((option) => option.value);
      setLocalSelectedValues(values);
      setSelectedValuesGlobal(values);
    };

    return (
      <select
        id="applications"
        className="p-3 rounded"
        multiple
        value={localSelectedValues}
        onChange={handleSelection}
      >
        <option value={Applications.LSAWebPortal}>
          {Applications.LSAWebPortal}
        </option>
        <option value={Applications.CustomerDashboard}>
          CustomerDashboard
        </option>
        <option value={Applications.Discover}>{Applications.Discover}</option>
        <option value={Applications.LSAMobile}>{Applications.LSAMobile}</option>
        <option value={Applications.BluePrint}>{Applications.BluePrint}</option>
      </select>
    );
  };

  const PermissionsDropDown = ({
    selectedPermissions,
  }: {
    selectedPermissions: string[];
  }) => {
    const [localSelectedValues, setLocalSelectedValues] =
      useState<string[]>(selectedPermissions);

    useEffect(() => {
      setLocalSelectedValues(selectedPermissions);
    }, [selectedPermissions]);

    const handleSelection = (event: React.ChangeEvent<HTMLSelectElement>) => {
      const selectedOptions = Array.from(event.target.selectedOptions);
      const values = selectedOptions.map((option) => option.value);
      setLocalSelectedValues(values);
      setSelectedPermissionsGlobal(values);
    };

    if (!selectedPermissions) setSelectedPermissionsGlobal(selectedPermissions);

    return (
      <select
        id="permissions"
        className="p-3 rounded"
        multiple
        value={localSelectedValues}
        onChange={handleSelection}
      >
        {permissions.map((permission) => (
          <option key={permission.id} value={`${permission.id}`}>
            {permission.name} ({permission.accessLevel})
          </option>
        ))}
      </select>
    );
  };

  const ModulesDropDown = ({
    selectedModules,
  }: {
    selectedModules: string[];
  }) => {
    const [localSelectedValues, setLocalSelectedValues] =
      useState<string[]>(selectedModules);

    useEffect(() => {
      setLocalSelectedValues(selectedModules);
    }, [selectedModules]);

    const handleSelection = (event: React.ChangeEvent<HTMLSelectElement>) => {
      const selectedOptions = Array.from(event.target.selectedOptions);
      const values = selectedOptions.map((option) => option.value);
      setLocalSelectedValues(values);
      setSelectedModulesGlobal(values);
    };

    if (!selectedModules) setSelectedModulesGlobal(selectedModules);

    return (
      <select
        id="modules"
        className="p-3 rounded"
        multiple
        value={localSelectedValues}
        onChange={handleSelection}
      >
        {modules.map((module) => (
          <option key={module.id} value={`${module.id}`}>
            {module.name} ({module.application})
          </option>
        ))}
      </select>
    );
  };

  const handleSaveClick = () => {
    let id = (document.getElementById("id") as HTMLInputElement)?.value;
    let name = (document.getElementById("name") as HTMLInputElement)?.value;
    let description = (
      document.getElementById("description") as HTMLInputElement
    )?.value;
    let applications = selectedApplications
      ? selectedApplications
      : initialApplications;
    let permissions = selectedPermissions
      ? selectedPermissions
      : initialPermissions;
    let modules = selectedModules ? selectedModules : initialModules;
    let status = (document.getElementById("status") as HTMLSelectElement)
      ?.value;

    let updatedRole = {
      id,
      name,
      description,
      applications,
      permissions,
      modules,
      status,
    } as unknown as Role;
    if (isUpdateMode) {
      updateRole(updatedRole);
    } else {
      updatedRole.id = null;
      createRole(updatedRole);
    }
    setItem(updatedRole);
    router.push("/role");
  };

  const renderForm = (role: Role) => {
    return (
      <>
        <div className="flex flex-col p-5">
          <label>Id:</label>
          <div className="flex pt-2 flex-col">
            <input
              id="id"
              className="p-2 rounded"
              type="text"
              defaultValue={role.id ?? ""}
              readOnly
              placeholder={role.id ?? ""}
            />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>Name:</label>
          <div className="flex pt-2 flex-col">
            <input
              id="name"
              className="p-2 rounded"
              type="text"
              defaultValue={role.name}
            />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>Description:</label>
          <div className="flex pt-2 flex-col">
            <input
              id="description"
              className="p-2 rounded"
              type="text"
              defaultValue={role.description}
            />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>Applications:</label>
          <div className="flex pt-2 flex-col">
            <ApplicationsDropDown selectedApplications={role.applications} />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>Permissions:</label>
          <div className="flex pt-2 flex-col">
            <PermissionsDropDown selectedPermissions={role.permissions} />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>Modules:</label>
          <div className="flex pt-2 flex-col">
            <ModulesDropDown selectedModules={role.modules} />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>CreatedAt:</label>
          <div className="flex pt-2 flex-col">
            <input
              id="createdAt"
              className="p-2 rounded"
              type="text"
              readOnly
              defaultValue={formatDate(new Date(role.createdAt))}
            />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>CreatedBy:</label>
          <div className="flex pt-2 flex-col">
            <input
              id="createdBy"
              className="p-2 rounded"
              type="text"
              readOnly
              defaultValue={role.createdBy}
            />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>UpdatedAt:</label>
          <div className="flex pt-2 flex-col">
            <input
              id="updatedAt"
              className="p-2 rounded"
              type="text"
              readOnly
              defaultValue={formatDate(new Date(role.updatedAt))}
            />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>UpdatedBy:</label>
          <div className="flex pt-2 flex-col">
            <input
              id="updatedBy"
              className="p-2 rounded"
              type="text"
              readOnly
              defaultValue={role.updatedBy}
            />
          </div>
        </div>
        <div className="flex flex-col p-5">
          <label>Status:</label>
          <div className="flex pt-2 flex-col">
            <StatusDropDown statusCode={role.status}></StatusDropDown>
          </div>
        </div>
      </>
    );
  };

  const ItemData = () => {
    const id = pathName.split("/");
    const idValue = id[id.length - 1];
    isUpdateMode = idValue != "create";
    if (isUpdateMode) {
      const { item, isLoading, error } = useRoleItem(idValue);
      const {
        items: permissionItems,
        error: permissionError,
        isLoading: isPermissionLoading,
        mutate: mutatePermission,
      } = usePermissionItems();
      const {
        items: moduleItems,
        error: moduleError,
        isLoading: isModuleLoading,
        mutate: mutateModule,
      } = useModuleItems();
      initialApplications = item.applications;
      initialPermissions = item.permissions;
      initialModules = item.modules;
      useEffect(() => {
        if (permissionItems && permissionItems.length > 0) {
          setPermissions(permissionItems); // Solo actualiza si hay cambios
        }
      }, [permissionItems]); // Solo se ejecuta si permissionItems cambia

      useEffect(() => {
        if (moduleItems && moduleItems.length > 0) {
          setModules(moduleItems); // Solo actualiza si hay cambios
        }
      }, [moduleItems]);

      if (!isLoading && !error && item) {
        return renderForm(item);
      } else return <>Loading</>;
    } else {
      return renderForm({
        id: "",
        name: "",
        description: "",
        applications: [],
        permissions: [],
        modules: [],
        status: Status.Active,
        createdAt: new Date(),
        createdBy: "",
        updatedAt: new Date(),
        updatedBy: "",
      });
    }
  };

  return (
    <div id="formContainer" className="flex flex-col">
      <div>
        <ItemData></ItemData>
        <div className="flex flex-row justify-center pb-10">
          <a onClick={handleSaveClick} className="button saveBtn">
            Save
          </a>
          <Link className="button cancelBtn" href="../role">
            Cancel
          </Link>
        </div>
      </div>
    </div>
  );
}