import React, { useState } from "react";
import { useRouter } from "next/router";
import { observer } from "mobx-react-lite";
import {
  LinkIcon,
  Signal,
  Tag,
  Trash2,
  Triangle,
  LayoutPanelTop,
  XCircle,
  CircleDot,
  CopyPlus,
  CalendarClock,
  CalendarCheck2,
} from "lucide-react";
// hooks
import { useEstimate, useIssueDetail, useProject, useProjectState, useUser } from "hooks/store";
import useToast from "hooks/use-toast";
// components
import {
  DeleteIssueModal,
  IssueLinkRoot,
  IssueRelationSelect,
  IssueCycleSelect,
  IssueModuleSelect,
  IssueParentSelect,
  IssueLabel,
} from "components/issues";
import { IssueSubscription } from "./subscription";
import {
  DateDropdown,
  EstimateDropdown,
  PriorityDropdown,
  ProjectMemberDropdown,
  StateDropdown,
} from "components/dropdowns";
// icons
import { ContrastIcon, DiceIcon, DoubleCircleIcon, RelatedIcon, StateGroupIcon, UserGroupIcon } from "@plane/ui";
// helpers
import { renderFormattedPayloadDate } from "helpers/date-time.helper";
import { copyTextToClipboard } from "helpers/string.helper";
// types
import type { TIssueOperations } from "./root";

type Props = {
  workspaceSlug: string;
  projectId: string;
  issueId: string;
  issueOperations: TIssueOperations;
  is_archived: boolean;
  is_editable: boolean;
};

export const IssueDetailsSidebar: React.FC<Props> = observer((props) => {
  const { workspaceSlug, projectId, issueId, issueOperations, is_archived, is_editable } = props;
  // router
  const router = useRouter();
  const { inboxIssueId } = router.query;
  // store hooks
  const { getProjectById } = useProject();
  const { currentUser } = useUser();
  const { projectStates } = useProjectState();
  const { areEstimatesEnabledForCurrentProject } = useEstimate();
  const { setToastAlert } = useToast();
  const {
    issue: { getIssueById },
  } = useIssueDetail();
  // states
  const [deleteIssueModal, setDeleteIssueModal] = useState(false);

  const issue = getIssueById(issueId);
  if (!issue) return <></>;

  const handleCopyText = () => {
    const originURL = typeof window !== "undefined" && window.location.origin ? window.location.origin : "";
    copyTextToClipboard(`${originURL}/${workspaceSlug}/projects/${projectId}/issues/${issue.id}`).then(() => {
      setToastAlert({
        type: "success",
        title: "Link Copied!",
        message: "Issue link copied to clipboard.",
      });
    });
  };

  const projectDetails = issue ? getProjectById(issue.project_id) : null;

  const minDate = issue.start_date ? new Date(issue.start_date) : null;
  minDate?.setDate(minDate.getDate());

  const maxDate = issue.target_date ? new Date(issue.target_date) : null;
  maxDate?.setDate(maxDate.getDate());

  const currentIssueState = projectStates?.find((s) => s.id === issue.state_id);

  return (
    <>
      {workspaceSlug && projectId && issue && (
        <DeleteIssueModal
          handleClose={() => setDeleteIssueModal(false)}
          isOpen={deleteIssueModal}
          data={issue}
          onSubmit={async () => {
            await issueOperations.remove(workspaceSlug, projectId, issueId);
            router.push(`/${workspaceSlug}/projects/${projectId}/issues`);
          }}
        />
      )}

      <div className="flex h-full w-full flex-col divide-y-2 divide-custom-border-200 overflow-hidden">
        <div className="flex items-center justify-between px-5 pb-3">
          <div className="flex items-center gap-x-2">
            {currentIssueState ? (
              <StateGroupIcon
                className="h-4 w-4"
                stateGroup={currentIssueState.group}
                color={currentIssueState.color}
              />
            ) : inboxIssueId ? (
              <StateGroupIcon className="h-4 w-4" stateGroup="backlog" color="#ff7700" />
            ) : null}
            <h4 className="text-lg font-medium text-custom-text-300">
              {projectDetails?.identifier}-{issue?.sequence_id}
            </h4>
          </div>

          <div className="flex flex-wrap items-center gap-2">
            {currentUser && !is_archived && (
              <IssueSubscription workspaceSlug={workspaceSlug} projectId={projectId} issueId={issueId} />
            )}

            <button
              type="button"
              className="rounded-md border border-custom-border-200 p-2 shadow-sm duration-300 hover:bg-custom-background-90 focus:border-custom-primary focus:outline-none focus:ring-1 focus:ring-custom-primary"
              onClick={handleCopyText}
            >
              <LinkIcon className="h-3.5 w-3.5" />
            </button>

            {is_editable && (
              <button
                type="button"
                className="rounded-md border border-red-500 p-2 text-red-500 shadow-sm duration-300 hover:bg-red-500/20 focus:outline-none"
                onClick={() => setDeleteIssueModal(true)}
              >
                <Trash2 className="h-3.5 w-3.5" />
              </button>
            )}
          </div>
        </div>

        <div className="h-full w-full overflow-y-auto px-5">
          <h5 className="text-sm font-medium mt-6">Properties</h5>
          {/* TODO: render properties using a common component */}
          <div className={`mt-3 space-y-2 ${!is_editable ? "opacity-60" : ""}`}>
            <div className="flex items-center gap-2 h-8">
              <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <DoubleCircleIcon className="h-4 w-4 flex-shrink-0" />
                <span>State</span>
              </div>
              <StateDropdown
                value={issue?.state_id ?? undefined}
                onChange={(val) => issueOperations.update(workspaceSlug, projectId, issueId, { state_id: val })}
                projectId={projectId?.toString() ?? ""}
                disabled={!is_editable}
                buttonVariant="transparent-with-text"
                className="w-3/5 flex-grow group"
                buttonContainerClassName="w-full text-left"
                buttonClassName="text-sm"
                dropdownArrow
                dropdownArrowClassName="h-3.5 w-3.5 hidden group-hover:inline"
              />
            </div>

            <div className="flex items-center gap-2 h-8">
              <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <UserGroupIcon className="h-4 w-4 flex-shrink-0" />
                <span>Assignees</span>
              </div>
              <ProjectMemberDropdown
                value={issue?.assignee_ids ?? undefined}
                onChange={(val) => issueOperations.update(workspaceSlug, projectId, issueId, { assignee_ids: val })}
                disabled={!is_editable}
                projectId={projectId?.toString() ?? ""}
                placeholder="Add assignees"
                multiple
                buttonVariant={issue?.assignee_ids?.length > 1 ? "transparent-without-text" : "transparent-with-text"}
                className="w-3/5 flex-grow group"
                buttonContainerClassName="w-full text-left"
                buttonClassName={`text-sm justify-between ${
                  issue?.assignee_ids.length > 0 ? "" : "text-custom-text-400"
                }`}
                hideIcon={issue.assignee_ids?.length === 0}
                dropdownArrow
                dropdownArrowClassName="h-3.5 w-3.5 hidden group-hover:inline"
              />
            </div>

            <div className="flex items-center gap-2 h-8">
              <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <Signal className="h-4 w-4 flex-shrink-0" />
                <span>Priority</span>
              </div>
              <PriorityDropdown
                value={issue?.priority || undefined}
                onChange={(val) => issueOperations.update(workspaceSlug, projectId, issueId, { priority: val })}
                disabled={!is_editable}
                buttonVariant="border-with-text"
                className="w-3/5 flex-grow rounded px-2 hover:bg-custom-background-80"
                buttonContainerClassName="w-full text-left"
                buttonClassName="w-min h-auto whitespace-nowrap"
              />
            </div>

            <div className="flex items-center gap-2 h-8">
              <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <CalendarClock className="h-4 w-4 flex-shrink-0" />
                <span>Start date</span>
              </div>
              <DateDropdown
                placeholder="Add start date"
                value={issue.start_date}
                onChange={(val) =>
                  issueOperations.update(workspaceSlug, projectId, issueId, {
                    start_date: val ? renderFormattedPayloadDate(val) : null,
                  })
                }
                maxDate={maxDate ?? undefined}
                disabled={!is_editable}
                buttonVariant="transparent-with-text"
                className="w-3/5 flex-grow group"
                buttonContainerClassName="w-full text-left"
                buttonClassName={`text-sm ${issue?.start_date ? "" : "text-custom-text-400"}`}
                hideIcon
                clearIconClassName="h-3 w-3 hidden group-hover:inline"
                showPlaceholderIcon
              />
            </div>

            <div className="flex items-center gap-2 h-8">
              <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <CalendarCheck2 className="h-4 w-4 flex-shrink-0" />
                <span>Due date</span>
              </div>
              <DateDropdown
                placeholder="Add due date"
                value={issue.target_date}
                onChange={(val) =>
                  issueOperations.update(workspaceSlug, projectId, issueId, {
                    target_date: val ? renderFormattedPayloadDate(val) : null,
                  })
                }
                minDate={minDate ?? undefined}
                disabled={!is_editable}
                buttonVariant="transparent-with-text"
                className="w-3/5 flex-grow group"
                buttonContainerClassName="w-full text-left"
                buttonClassName={`text-sm ${issue?.target_date ? "" : "text-custom-text-400"}`}
                hideIcon
                clearIconClassName="h-3 w-3 hidden group-hover:inline"
                showPlaceholderIcon
              />
            </div>

            {areEstimatesEnabledForCurrentProject && (
              <div className="flex items-center gap-2 h-8">
                <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                  <Triangle className="h-4 w-4 flex-shrink-0" />
                  <span>Estimate</span>
                </div>
                <EstimateDropdown
                  value={issue?.estimate_point !== null ? issue.estimate_point : null}
                  onChange={(val) => issueOperations.update(workspaceSlug, projectId, issueId, { estimate_point: val })}
                  projectId={projectId}
                  disabled={!is_editable}
                  buttonVariant="transparent-with-text"
                  className="w-3/5 flex-grow group"
                  buttonContainerClassName="w-full text-left"
                  buttonClassName={`text-sm ${issue?.estimate_point !== null ? "" : "text-custom-text-400"}`}
                  placeholder="None"
                  hideIcon
                  dropdownArrow
                  dropdownArrowClassName="h-3.5 w-3.5 hidden group-hover:inline"
                />
              </div>
            )}

            {projectDetails?.module_view && (
              <div className="flex items-center gap-2 h-8">
                <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                  <DiceIcon className="h-4 w-4 flex-shrink-0" />
                  <span>Module</span>
                </div>
                <IssueModuleSelect
                  className="w-3/5 flex-grow"
                  workspaceSlug={workspaceSlug}
                  projectId={projectId}
                  issueId={issueId}
                  issueOperations={issueOperations}
                  disabled={!is_editable}
                />
              </div>
            )}

            {projectDetails?.cycle_view && (
              <div className="flex items-center gap-2 h-8">
                <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                  <ContrastIcon className="h-4 w-4 flex-shrink-0" />
                  <span>Cycle</span>
                </div>
                <IssueCycleSelect
                  className="w-3/5 flex-grow"
                  workspaceSlug={workspaceSlug}
                  projectId={projectId}
                  issueId={issueId}
                  issueOperations={issueOperations}
                  disabled={!is_editable}
                />
              </div>
            )}

            <div className="flex items-center gap-2 h-8">
              <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <LayoutPanelTop className="h-4 w-4 flex-shrink-0" />
                <span>Parent</span>
              </div>
              <IssueParentSelect
                className="w-3/5 flex-grow h-full"
                workspaceSlug={workspaceSlug}
                projectId={projectId}
                issueId={issueId}
                issueOperations={issueOperations}
                disabled={!is_editable}
              />
            </div>

            <div className="flex gap-2 min-h-8">
              <div className="flex gap-1 pt-2 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <RelatedIcon className="h-4 w-4 flex-shrink-0" />
                <span>Relates to</span>
              </div>
              <IssueRelationSelect
                className="w-3/5 flex-grow min-h-8 h-full"
                workspaceSlug={workspaceSlug}
                projectId={projectId}
                issueId={issueId}
                relationKey="relates_to"
                disabled={!is_editable}
              />
            </div>

            <div className="flex gap-2 min-h-8">
              <div className="flex gap-1 pt-2 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <XCircle className="h-4 w-4 flex-shrink-0" />
                <span>Blocking</span>
              </div>
              <IssueRelationSelect
                className="w-3/5 flex-grow min-h-8 h-full"
                workspaceSlug={workspaceSlug}
                projectId={projectId}
                issueId={issueId}
                relationKey="blocking"
                disabled={!is_editable}
              />
            </div>

            <div className="flex gap-2 min-h-8">
              <div className="flex gap-1 pt-2 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <CircleDot className="h-4 w-4 flex-shrink-0" />
                <span>Blocked by</span>
              </div>
              <IssueRelationSelect
                className="w-3/5 flex-grow min-h-8 h-full"
                workspaceSlug={workspaceSlug}
                projectId={projectId}
                issueId={issueId}
                relationKey="blocked_by"
                disabled={!is_editable}
              />
            </div>

            <div className="flex gap-2 min-h-8">
              <div className="flex gap-1 pt-2 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
                <CopyPlus className="h-4 w-4 flex-shrink-0" />
                <span>Duplicate of</span>
              </div>
              <IssueRelationSelect
                className="w-3/5 flex-grow min-h-8 h-full"
                workspaceSlug={workspaceSlug}
                projectId={projectId}
                issueId={issueId}
                relationKey="duplicate"
                disabled={!is_editable}
              />
            </div>
          </div>

          <div className="flex items-center gap-2 min-h-8 py-2">
            <div className="flex items-center gap-1 w-2/5 flex-shrink-0 text-sm text-custom-text-300">
              <Tag className="h-4 w-4 flex-shrink-0" />
              <span>Labels</span>
            </div>
            <div className="w-3/5 flex-grow min-h-8 h-full">
              <IssueLabel
                workspaceSlug={workspaceSlug}
                projectId={projectId}
                issueId={issueId}
                disabled={!is_editable}
              />
            </div>
          </div>

          <IssueLinkRoot
            workspaceSlug={workspaceSlug}
            projectId={projectId}
            issueId={issueId}
            disabled={!is_editable}
          />
        </div>
      </div>
    </>
  );
});