import { Injectable, Logger } from '@nestjs/common';
import { PgDBService } from 'src/db/db.service';
import { InsertNewServiceProviderDTO, SPID_DTO, UpdateServiceProviderDTO } from 'src/dto/property.dto';
import { InternalServerException } from 'src/exceptions/internalServerError.exception';

import { PoolClient } from 'pg';
import { checkPgUserDefinedErrors, handlePgError, releasePgClient, ResponseStatus, toUpperCaseKeys } from 'src/utils/helper';

@Injectable()
export class SpService {

    private readonly logger = new Logger(SpService.name);

    constructor(private readonly pgDBService: PgDBService) { }

    async insertNewServiceProvider(body: InsertNewServiceProviderDTO) {

        console.log(" i got executed here ....");

        let client: PoolClient | null = null;

        const cursorName = 'p_cursor';

        try {
            client = await this.pgDBService.getConnection();

            console.log(" pg connection successfull ..... ");

            await client.query('BEGIN');

            const callProcQuery = `
                        CALL "CARNETSYS".uscib_managed_pkg_insertnewsp($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17)
                    `;
            await client.query(callProcQuery,
                [
                    body.P_NAME,
                    body.P_LOOKUPCODE,
                    body.P_ADDRESS1,
                    body.P_ADDRESS2,
                    body.P_CITY,
                    body.P_STATE,
                    body.P_ZIP,
                    body.P_COUNTRY,
                    body.P_ISSUINGREGION,
                    body.P_REPLACEMENTREGION,
                    body.P_BONDSURETY,
                    body.P_CARGOPOLICYNO,
                    body.P_CARGOSURETY,
                    body.P_USER_ID,
                    body.P_NOTES,
                    body.P_FILEIDS,
                    cursorName
                ]);

            console.log("Procedure called");

            // 🚫 DON'T quote the cursor name in FETCH
            const fetchResult = await client.query(`FETCH ALL FROM ${cursorName}`);

            console.log("Fetch done", fetchResult?.rows);

            // 🚫 DON'T quote the cursor name in CLOSE
            await client.query(`CLOSE ${cursorName}`);
            console.log("Cursor closed");
            await client.query('COMMIT');
            console.log("Transaction committed");

            checkPgUserDefinedErrors(fetchResult);

            return { statusCode: 201, message: ResponseStatus.created, ...toUpperCaseKeys(fetchResult?.rows)[0] || {} };

        } catch (error) {
            if (client) await client.query('ROLLBACK');
            console.log(" i went through here ... ");

            handlePgError(error, SpService.name)
        } finally {
            releasePgClient(client)
        }

    }

    async updateServiceProvider(body: UpdateServiceProviderDTO) {

        let client: PoolClient | null = null;

        const cursorName = 'p_cursor';

        try {
            client = await this.pgDBService.getConnection();

            await client.query('BEGIN');

            const callProcQuery = `
                        CALL "CARNETSYS".uscib_managed_pkg_updatesp($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18)
                    `;
            await client.query(callProcQuery,
                [
                    body.P_SPID,
                    body.P_NAME,
                    body.P_LOOKUPCODE,
                    body.P_ADDRESS1,
                    body.P_ADDRESS2,
                    body.P_CITY,
                    body.P_STATE,
                    body.P_ZIP,
                    body.P_COUNTRY,
                    body.P_BONDSURETY,
                    body.P_CARGOPOLICYNO,
                    body.P_CARGOSURETY,
                    body.P_REPLACEMENTREGION,
                    body.P_ISSUINGREGION,
                    body.P_USER_ID,
                    body.P_NOTES,
                    body.P_FILEIDS,
                    cursorName
                ]);

            // 🚫 DON'T quote the cursor name in FETCH
            const fetchResult = await client.query(`FETCH ALL FROM ${cursorName}`);

            // 🚫 DON'T quote the cursor name in CLOSE
            await client.query(`CLOSE ${cursorName}`);
            await client.query('COMMIT');

            checkPgUserDefinedErrors(fetchResult);

            return { statusCode: 201, message: ResponseStatus.created, ...toUpperCaseKeys(fetchResult?.rows)[0] || {} };

        } catch (error) {
            if (client) await client.query('ROLLBACK');
            handlePgError(error, SpService.name)
        } finally {
            releasePgClient(client)
        }
    }

    async getAllServiceproviders() {

        let client: PoolClient | null = null;

        const cursorName = 'p_cursor';

        try {
            client = await this.pgDBService.getConnection();

            await client.query('BEGIN');

            const callProcQuery = `
                CALL "CARNETSYS".uscib_managed_pkg_getallsps($1)
            `;
            await client.query(callProcQuery, [cursorName]);

            // 🚫 DON'T quote the cursor name in FETCH
            const fetchResult = await client.query(`FETCH ALL FROM ${cursorName}`);

            // 🚫 DON'T quote the cursor name in CLOSE
            await client.query(`CLOSE ${cursorName}`);
            await client.query('COMMIT');

            return toUpperCaseKeys(fetchResult.rows);

        } catch (error) {
            if (client) await client.query('ROLLBACK');
            handlePgError(error, SpService.name)
        } finally {
            releasePgClient(client)
        }

    }

    async getServiceproviderByID(body: SPID_DTO) {

        let client: PoolClient | null = null;

        const cursorName = 'p_cursor';

        try {
            client = await this.pgDBService.getConnection();

            await client.query('BEGIN');

            const callProcQuery = `
                CALL "CARNETSYS".uscib_managed_pkg_getspbyspid($1, $2)
            `;
            await client.query(callProcQuery, [body.P_SPID, cursorName]);

            // 🚫 DON'T quote the cursor name in FETCH
            const fetchResult = await client.query(`FETCH ALL FROM ${cursorName}`);

            // 🚫 DON'T quote the cursor name in CLOSE
            await client.query(`CLOSE ${cursorName}`);
            await client.query('COMMIT');

            return toUpperCaseKeys(fetchResult.rows);

        } catch (error) {
            if (client) await client.query('ROLLBACK');
            handlePgError(error, SpService.name)
        } finally {
            releasePgClient(client)
        }

    }
}