import {
  GetMessageListResponse,
  MedipostAction,
  MedipostPublicMessageResponse,
  Message,
  UuringuGrupp,
} from "@/lib/types/medipost";
import { Tables } from "@/supabase/database.types";
import { createClient, SupabaseClient } from "@supabase/supabase-js";
import axios from "axios";
import { XMLParser } from "fast-xml-parser";
import { SyncStatus } from "@/lib/types/audit";
import { toArray } from "@/lib/utils";

const BASE_URL = process.env.MEDIPOST_URL!;
const USER = process.env.MEDIPOST_USER!;
const PASSWORD = process.env.MEDIPOST_PASSWORD!;

export async function getMessages() {
  try {
    const publicMessage = await getLatestPublicMessageListItem();

    if (!publicMessage) {
      return null;
    }

    //Teenused tuleb mappida kokku MedReport teenustega. <UuringId> alusel
    return getPublicMessage(publicMessage.messageId);
  } catch (error) {
    console.error(error);
  }
}

export async function getLatestPublicMessageListItem() {
  const { data } = await axios.get<GetMessageListResponse>(BASE_URL, {
    params: {
      Action: MedipostAction.GetPublicMessageList,
      User: USER,
      Password: PASSWORD,
      Sender: "syndev",
      // LastChecked (date+time) can be used here to get only messages since the last check - add when cron is created
      // MessageType check only for messages of certain type
    },
  });

  if (data.code && data.code !== 0) {
    throw new Error("Failed to get public message list");
  }

  return getLatestMessage(data?.messages);
}

export async function getPublicMessage(messageId: string) {
  const { data } = await axios.get(BASE_URL, {
    params: {
      Action: MedipostAction.GetPublicMessage,
      User: USER,
      Password: PASSWORD,
      MessageId: messageId,
    },
    headers: {
      Accept: "application/xml",
    },
  });
  const parser = new XMLParser({ ignoreAttributes: false });
  const parsed: MedipostPublicMessageResponse = parser.parse(data);

  if (parsed.ANSWER?.CODE && parsed.ANSWER?.CODE !== 0) {
    throw new Error(`Failed to get public message (id: ${messageId})`);
  }

  return parsed;
}

export async function sendPrivateMessage(messageXml: string, receiver: string) {
  const body = new FormData();
  body.append("Action", MedipostAction.SendPrivateMessage);
  body.append("User", USER);
  body.append("Password", PASSWORD);
  body.append("Receiver", receiver);
  body.append("MessageType", "Tellimus");
  body.append(
    "Message",
    new Blob([messageXml], {
      type: "text/xml; charset=UTF-8",
    })
  );

  const { data } = await axios.post(BASE_URL, body);

  if (data.code && data.code !== 0) {
    throw new Error(`Failed to send private message`);
  }
}

export async function getLatestPrivateMessageListItem() {
  const { data } = await axios.get<GetMessageListResponse>(BASE_URL, {
    params: {
      Action: MedipostAction.GetPrivateMessageList,
      User: USER,
      Password: PASSWORD,
    },
  });

  if (data.code && data.code !== 0) {
    throw new Error("Failed to get private message list");
  }

  return getLatestMessage(data?.messages);
}

export async function getPrivateMessage(messageId: string) {
  const { data } = await axios.get(BASE_URL, {
    params: {
      Action: MedipostAction.GetPrivateMessage,
      User: USER,
      Password: PASSWORD,
      MessageId: messageId,
    },
    headers: {
      Accept: "application/xml",
    },
  });

  if (data.code && data.code !== 0) {
    throw new Error(`Failed to get private message (id: ${messageId})`);
  }

  const parser = new XMLParser({ ignoreAttributes: false });
  return parser.parse(data);
}

export async function deletePrivateMessage(messageId: string) {
  const { data } = await axios.get(BASE_URL, {
    params: {
      Action: MedipostAction.DeletePrivateMessage,
      User: USER,
      Password: PASSWORD,
      MessageId: messageId,
    },
  });

  if (data.code && data.code !== 0) {
    throw new Error(`Failed to delete private message (id: ${messageId})`);
  }
}

export async function readPrivateMessageResponse() {
  try {
    const privateMessage = await getLatestPrivateMessageListItem();

    if (!privateMessage) {
      return null;
    }

    const privateMessageContent = await getPrivateMessage(
      privateMessage.messageId
    );

    if (privateMessageContent) {
      // to be implemented: map and save, only delete if successful
      await deletePrivateMessage(privateMessage.messageId);
    }
  } catch (e) {
    console.error(e);
  }
}

async function saveAnalysisGroup(
  analysisGroup: UuringuGrupp,
  supabase: SupabaseClient
) {
  const { data: insertedAnalysisGroup, error } = await supabase
    .from("analysis_groups")
    .upsert(
      {
        original_id: analysisGroup.UuringuGruppId,
        name: analysisGroup.UuringuGruppNimi,
        order: analysisGroup.UuringuGruppJarjekord,
      },
      { onConflict: "original_id", ignoreDuplicates: false }
    )
    .select("id");

  if (error || !insertedAnalysisGroup[0]?.id) {
    throw new Error(
      `Failed to insert analysis group (id: ${analysisGroup.UuringuGruppId}), error: ${error?.message}`
    );
  }
  const analysisGroupId = insertedAnalysisGroup[0].id;

  const analysisGroupCodes = toArray(analysisGroup.Kood);
  const codes: Partial<Tables<"codes">>[] = analysisGroupCodes.map((kood) => ({
    hk_code: kood.HkKood,
    hk_code_multiplier: kood.HkKoodiKordaja,
    coefficient: kood.Koefitsient,
    price: kood.Hind,
    analysis_group_id: analysisGroupId,
  }));

  const analysisGroupItems = toArray(analysisGroup.Uuring);

  for (const item of analysisGroupItems) {
    const analysisElement = item.UuringuElement;

    const { data: insertedAnalysisElement, error } = await supabase
      .from("analysis_elements")
      .upsert(
        {
          analysis_id_oid: analysisElement.UuringIdOID,
          analysis_id_original: analysisElement.UuringId,
          tehik_short_loinc: analysisElement.TLyhend,
          tehik_loinc_name: analysisElement.KNimetus,
          analysis_name_lab: analysisElement.UuringNimi,
          order: analysisElement.Jarjekord,
          parent_analysis_group_id: analysisGroupId,
          material_groups: toArray(item.MaterjalideGrupp),
        },
        { onConflict: "analysis_id_original", ignoreDuplicates: false }
      )
      .select('id');

    if (error || !insertedAnalysisElement[0]?.id) {
      throw new Error(
        `Failed to insert analysis element (id: ${analysisElement.UuringId}), error: ${error?.message}`
      );
    }

    const insertedAnalysisElementId = insertedAnalysisElement[0].id;

    if (analysisElement.Kood) {
      const analysisElementCodes = toArray(analysisElement.Kood);
      codes.push(
        ...analysisElementCodes.map((kood) => ({
          hk_code: kood.HkKood,
          hk_code_multiplier: kood.HkKoodiKordaja,
          coefficient: kood.Koefitsient,
          price: kood.Hind,
          analysis_element_id: insertedAnalysisElementId,
        }))
      );
    }

    const analyses = analysisElement.UuringuElement;
    if (analyses?.length) {
      for (const analysis of analyses) {
        const { data: insertedAnalysis, error } = await supabase
          .from("analyses")
          .upsert(
            {
              analysis_id_oid: analysis.UuringIdOID,
              analysis_id_original: analysis.UuringId,
              tehik_short_loinc: analysis.TLyhend,
              tehik_loinc_name: analysis.KNimetus,
              analysis_name_lab: analysis.UuringNimi,
              order: analysis.Jarjekord,
              parent_analysis_element_id: insertedAnalysisElementId,
            },
            { onConflict: "analysis_id_original", ignoreDuplicates: false }
          )
          .select('id');

        if (error || !insertedAnalysis[0]?.id) {
          throw new Error(
            `Failed to insert analysis (id: ${analysis.UuringId}) error: ${error?.message}`
          );
        }

        const insertedAnalysisId = insertedAnalysis[0].id;
        if (analysisElement.Kood) {
          const analysisCodes = toArray(analysis.Kood);

          codes.push(
            ...analysisCodes.map((kood) => ({
              hk_code: kood.HkKood,
              hk_code_multiplier: kood.HkKoodiKordaja,
              coefficient: kood.Koefitsient,
              price: kood.Hind,
              analysis_id: insertedAnalysisId,
            }))
          );
        }
      }
    }
  }

  const { error: codesError } = await supabase
    .from("codes")
    .upsert(codes, { ignoreDuplicates: false });

  if (codesError?.code) {
    throw new Error(
      `Failed to insert codes (analysis group id: ${analysisGroup.UuringuGruppId})`
    );
  }
}

export async function syncPublicMessage(
  message?: MedipostPublicMessageResponse | null
) {
  const supabase = createClient(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_SERVICE_ROLE_KEY!,
    {
      auth: {
        persistSession: false,
        autoRefreshToken: false,
        detectSessionInUrl: false,
      },
    }
  );

  try {
    const providers = toArray(message?.Saadetis?.Teenused.Teostaja);
    const analysisGroups = providers.flatMap((provider) =>
      toArray(provider.UuringuGrupp)
    );
    if (!message || !analysisGroups.length) {
      return supabase.schema("audit").from("sync_entries").insert({
        operation: "ANALYSES_SYNC",
        comment: "No data received",
        status: SyncStatus.Fail,
        changed_by_role: "service_role",
      });
    }

    for (const analysisGroup of analysisGroups) {
      await saveAnalysisGroup(analysisGroup, supabase);
    }

    await supabase.schema("audit").from("sync_entries").insert({
      operation: "ANALYSES_SYNC",
      status: SyncStatus.Success,
      changed_by_role: "service_role",
    });
  } catch (e) {
    console.error(e);
    await supabase
      .schema("audit")
      .from("sync_entries")
      .insert({
        operation: "ANALYSES_SYNC",
        status: SyncStatus.Fail,
        comment: JSON.stringify(e),
        changed_by_role: "service_role",
      });
  }
}

function getLatestMessage(messages?: Message[]) {
  if (!messages?.length) {
    return null;
  }

  return messages.reduce((prev, current) =>
    Number(prev.messageId) > Number(current.messageId) ? prev : current
  );
}