import CreateBy from "../Types/Database/CreateBy";
import { OnCreate, OnUpdate } from "../Types/Database/Hooks";
import DatabaseService from "./DatabaseService";
import OneUptimeDate from "../../Types/Date";
import Model from "../../Models/DatabaseModels/IncidentPublicNote";
import IncidentFeedService from "./IncidentFeedService";
import { IncidentFeedEventType } from "../../Models/DatabaseModels/IncidentFeed";
import { Blue500, Indigo500 } from "../../Types/BrandColors";
import ObjectID from "../../Types/ObjectID";
import { LIMIT_PER_PROJECT } from "../../Types/Database/LimitMax";
import IncidentService from "./IncidentService";
import Incident from "../../Models/DatabaseModels/Incident";
import CaptureSpan from "../Utils/Telemetry/CaptureSpan";
import StatusPageSubscriberNotificationStatus from "../../Types/StatusPage/StatusPageSubscriberNotificationStatus";
import File from "../../Models/DatabaseModels/File";
import FileAttachmentMarkdownUtil from "../Utils/FileAttachmentMarkdownUtil";

export class Service extends DatabaseService<Model> {
  public constructor() {
    super(Model);
  }

  @CaptureSpan()
  public async addNote(data: {
    userId: ObjectID;
    incidentId: ObjectID;
    projectId: ObjectID;
    note: string;
    attachmentFileIds?: Array<ObjectID>;
    postedFromSlackMessageId?: string;
  }): Promise<Model> {
    const publicNote: Model = new Model();
    publicNote.createdByUserId = data.userId;
    publicNote.incidentId = data.incidentId;
    publicNote.projectId = data.projectId;
    publicNote.note = data.note;
    publicNote.postedAt = OneUptimeDate.getCurrentDate();

    if (data.postedFromSlackMessageId) {
      publicNote.postedFromSlackMessageId = data.postedFromSlackMessageId;
    }

    if (data.attachmentFileIds && data.attachmentFileIds.length > 0) {
      publicNote.attachments = data.attachmentFileIds.map(
        (fileId: ObjectID) => {
          const file: File = new File();
          file.id = fileId;
          return file;
        },
      );
    }

    return this.create({
      data: publicNote,
      props: {
        isRoot: true,
      },
    });
  }

  @CaptureSpan()
  public async hasNoteFromSlackMessage(data: {
    incidentId: ObjectID;
    postedFromSlackMessageId: string;
  }): Promise<boolean> {
    const existingNote: Model | null = await this.findOneBy({
      query: {
        incidentId: data.incidentId,
        postedFromSlackMessageId: data.postedFromSlackMessageId,
      },
      select: {
        _id: true,
      },
      props: {
        isRoot: true,
      },
    });

    return existingNote !== null;
  }

  @CaptureSpan()
  protected override async onBeforeCreate(
    createBy: CreateBy<Model>,
  ): Promise<OnCreate<Model>> {
    if (!createBy.data.postedAt) {
      createBy.data.postedAt = OneUptimeDate.getCurrentDate();
    }

    // Set notification status based on shouldStatusPageSubscribersBeNotifiedOnNoteCreated
    if (
      createBy.data.shouldStatusPageSubscribersBeNotifiedOnNoteCreated === false
    ) {
      createBy.data.subscriberNotificationStatusOnNoteCreated =
        StatusPageSubscriberNotificationStatus.Skipped;
      createBy.data.subscriberNotificationStatusMessage =
        "Notifications skipped as subscribers are not to be notified for this incident note.";
    } else if (
      createBy.data.shouldStatusPageSubscribersBeNotifiedOnNoteCreated === true
    ) {
      createBy.data.subscriberNotificationStatusOnNoteCreated =
        StatusPageSubscriberNotificationStatus.Pending;
    }

    return {
      createBy: createBy,
      carryForward: null,
    };
  }

  @CaptureSpan()
  public override async onCreateSuccess(
    _onCreate: OnCreate<Model>,
    createdItem: Model,
  ): Promise<Model> {
    const userId: ObjectID | null | undefined =
      createdItem.createdByUserId || createdItem.createdByUser?.id;

    const incidentId: ObjectID = createdItem.incidentId!;
    const projectId: ObjectID = createdItem.projectId!;
    const incidentNumberResult: {
      number: number | null;
      numberWithPrefix: string | null;
    } = await IncidentService.getIncidentNumber({
      incidentId: incidentId,
    });
    const incidentNumberDisplay: string =
      incidentNumberResult.numberWithPrefix ||
      "#" + incidentNumberResult.number;

    const attachmentsMarkdown: string = await this.getAttachmentsMarkdown(
      createdItem.id!,
      "/incident-public-note/attachment",
    );

    await IncidentFeedService.createIncidentFeedItem({
      incidentId: createdItem.incidentId!,
      projectId: createdItem.projectId!,
      incidentFeedEventType: IncidentFeedEventType.PublicNote,
      displayColor: Indigo500,
      userId: userId || undefined,
      feedInfoInMarkdown: `📄 posted **public note** for this [Incident ${incidentNumberDisplay}](${(await IncidentService.getIncidentLinkInDashboard(projectId!, incidentId!)).toString()}) on status page:

${(createdItem.note || "") + attachmentsMarkdown}
          `,
      workspaceNotification: {
        sendWorkspaceNotification: true,
        notifyUserId: userId || undefined,
      },
    });

    return createdItem;
  }

  @CaptureSpan()
  public override async onUpdateSuccess(
    onUpdate: OnUpdate<Model>,
    _updatedItemIds: Array<ObjectID>,
  ): Promise<OnUpdate<Model>> {
    if (onUpdate.updateBy.data.note) {
      const updatedItems: Array<Model> = await this.findBy({
        query: onUpdate.updateBy.query,
        limit: LIMIT_PER_PROJECT,
        skip: 0,
        props: {
          isRoot: true,
        },
        select: {
          incidentId: true,
          projectId: true,
          incident: {
            _id: true,
            incidentNumber: true,
            projectId: true,
          },
          note: true,
          createdByUserId: true,
          createdByUser: {
            _id: true,
          },
        },
      });

      const userId: ObjectID | null | undefined =
        onUpdate.updateBy.props.userId;

      for (const updatedItem of updatedItems) {
        const incident: Incident = updatedItem.incident!;

        const attachmentsMarkdown: string = await this.getAttachmentsMarkdown(
          updatedItem.id!,
          "/incident-public-note/attachment",
        );

        await IncidentFeedService.createIncidentFeedItem({
          incidentId: updatedItem.incidentId!,
          projectId: updatedItem.projectId!,
          incidentFeedEventType: IncidentFeedEventType.PrivateNote,
          displayColor: Blue500,
          userId: userId || undefined,

          feedInfoInMarkdown: `📄 updated **Public Note** for this [Incident ${incident.incidentNumber}](${(await IncidentService.getIncidentLinkInDashboard(incident.projectId!, incident.id!)).toString()})
        
${(updatedItem.note || "") + attachmentsMarkdown}
                  `,
          workspaceNotification: {
            sendWorkspaceNotification: true,
            notifyUserId: userId || undefined,
          },
        });
      }
    }
    return onUpdate;
  }

  private async getAttachmentsMarkdown(
    modelId: ObjectID,
    attachmentApiPath: string,
  ): Promise<string> {
    if (!modelId) {
      return "";
    }

    const noteWithAttachments: Model | null = await this.findOneById({
      id: modelId,
      select: {
        attachments: {
          _id: true,
        },
      },
      props: {
        isRoot: true,
      },
    });

    if (!noteWithAttachments || !noteWithAttachments.attachments) {
      return "";
    }

    const attachmentIds: Array<ObjectID> = noteWithAttachments.attachments
      .map((file: File) => {
        if (file.id) {
          return file.id;
        }

        if (file._id) {
          return new ObjectID(file._id);
        }

        return null;
      })
      .filter((id: ObjectID | null): id is ObjectID => {
        return Boolean(id);
      });

    if (!attachmentIds.length) {
      return "";
    }

    return await FileAttachmentMarkdownUtil.buildAttachmentMarkdown({
      modelId,
      attachmentIds,
      attachmentApiPath,
    });
  }
}

export default new Service();
