/**
 * Copyright since 2025 Mifos Initiative
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

import { Component } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { DateDdmmyyyyPickerComponent } from '../date-ddmmyyyy-picker/date-ddmmyyyy-picker.component';
import {
  SCRIPT_MASTER,
  BROKER_MASTER,
  PARTY_MASTER,
  SUBTYPE_MASTER,
  CONTROL_PARAMETERS,
  MUTUAL_FUND_PRODUCTS,
  SGL_BANK_MASTER,
  SCRIPT_MARKET_DETAIL,
  DAILY_SCRIPT_RATES,
  LIEN_REASON_MASTER,
  ScriptMaster,
  BrokerMaster,
  PartyMaster,
  SubTypeMaster,
  ControlParameter,
  MutualFundProductMaster,
  SglBankMaster,
  ScriptMarketDetail,
  DailyScriptRate,
  LienReason,
  InstrumentType
} from '../investment-data';
import { exportWorkbook, ExportSheetSpec } from '../investment-export';

type MasterTab =
  | 'party'
  | 'script'
  | 'subtype'
  | 'broker'
  | 'control'
  | 'dailyscript'
  | 'lien'
  | 'mfproduct'
  | 'sglbank'
  | 'marketdetail';

/**
 * Investment master-data screens (legacy "04-13" Entry submenu masters) — 9 simple dummy
 * lists, each with an inline Add-row form so the demo stays interactive without a backend.
 */
@Component({
  selector: 'mifosx-investment-masters',
  templateUrl: './investment-masters.component.html',
  styleUrls: [
    '../../cashier/cashier-shared.scss',
    '../investment-shared.scss'
  ],
  standalone: true,
  imports: [
    CommonModule,
    FormsModule,
    DateDdmmyyyyPickerComponent
  ]
})
export class InvestmentMastersComponent {
  activeTab: MasterTab = 'party';

  scripts: ScriptMaster[] = [...SCRIPT_MASTER];
  brokers: BrokerMaster[] = [...BROKER_MASTER];
  parties: PartyMaster[] = [...PARTY_MASTER];
  subTypes: SubTypeMaster[] = [...SUBTYPE_MASTER];
  controlParams: ControlParameter[] = [...CONTROL_PARAMETERS];
  mfProducts: MutualFundProductMaster[] = [...MUTUAL_FUND_PRODUCTS];
  sglBanks: SglBankMaster[] = [...SGL_BANK_MASTER];
  marketDetails: ScriptMarketDetail[] = [...SCRIPT_MARKET_DETAIL];
  dailyScriptRates: DailyScriptRate[] = [...DAILY_SCRIPT_RATES];
  lienReasons: LienReason[] = [...LIEN_REASON_MASTER];

  readonly instrumentTypes: InstrumentType[] = [
    'FD',
    'GOVT_SECURITY',
    'NON_SLR',
    'BOND',
    'MUTUAL_FUND',
    'SHARE'
  ];

  private readonly masterLabels: Record<MasterTab, string> = {
    party: 'Bank / Party Master',
    script: 'Script Master',
    subtype: 'SubType Master',
    broker: 'Broker Master',
    control: 'Control Parameter',
    dailyscript: 'Daily Script Master',
    lien: 'LIEN Reason Master',
    mfproduct: 'Mutual Fund Product Master',
    sglbank: 'SGL Bank Master',
    marketdetail: 'Script Market Detail'
  };

  generating = false;
  toastMsg = '';
  toastVisible = false;
  private toastTimer: ReturnType<typeof setTimeout> | undefined;

  newParty: Partial<PartyMaster> = {};
  newScript: Partial<ScriptMaster> = {};
  newSubType: Partial<SubTypeMaster> = {};
  newBroker: Partial<BrokerMaster> = {};
  newControlParam: Partial<ControlParameter> = {};
  newLienReason: Partial<LienReason> = {};
  newMfProduct: Partial<MutualFundProductMaster> = {};
  newSglBank: Partial<SglBankMaster> = {};
  newDailyRate: Partial<DailyScriptRate> = {};

  setTab(tab: MasterTab): void {
    this.activeTab = tab;
  }

  addParty(): void {
    if (!this.newParty.partyName || !this.newParty.partyType) {
      this.toast('Enter Party Name and Type.');
      return;
    }
    this.parties = [
      {
        partyCode: `PTY-${String(this.parties.length + 1).padStart(3, '0')}`,
        panNo: '',
        ...this.newParty
      } as PartyMaster,
      ...this.parties
    ];
    this.newParty = {};
    this.toast('Party/Bank master added.');
  }

  addScript(): void {
    if (!this.newScript.scriptName || !this.newScript.instrumentType) {
      this.toast('Enter Script Name and Instrument Type.');
      return;
    }
    this.scripts = [
      {
        scriptCode: this.newScript.scriptCode || `SCR-${this.scripts.length + 1}`,
        isin: '',
        faceValuePerUnit: 100,
        ...this.newScript
      } as ScriptMaster,
      ...this.scripts
    ];
    this.newScript = {};
    this.toast('Script master added.');
  }

  addSubType(): void {
    if (!this.newSubType.subTypeName || !this.newSubType.instrumentType) {
      this.toast('Enter Sub Type Name and Instrument Type.');
      return;
    }
    this.subTypes = [
      { subTypeCode: String(this.subTypes.length + 1), ...this.newSubType } as SubTypeMaster,
      ...this.subTypes
    ];
    this.newSubType = {};
    this.toast('Sub Type master added.');
  }

  addBroker(): void {
    if (!this.newBroker.brokerName) {
      this.toast('Enter Broker Name.');
      return;
    }
    this.brokers = [
      {
        brokerCode: `BRK-${String(this.brokers.length + 1).padStart(3, '0')}`,
        contactNo: '',
        empanelledOn: '',
        status: 'ACTIVE',
        ...this.newBroker
      } as BrokerMaster,
      ...this.brokers
    ];
    this.newBroker = {};
    this.toast('Broker master added.');
  }

  addControlParam(): void {
    if (!this.newControlParam.paramName || !this.newControlParam.paramValue) {
      this.toast('Enter Parameter Name and Value.');
      return;
    }
    this.controlParams = [
      { description: '', ...this.newControlParam } as ControlParameter,
      ...this.controlParams
    ];
    this.newControlParam = {};
    this.toast('Control parameter added.');
  }

  addLienReason(): void {
    if (!this.newLienReason.reasonDescription) {
      this.toast('Enter Reason Description.');
      return;
    }
    this.lienReasons = [
      { reasonCode: `LR-${String(this.lienReasons.length + 1).padStart(2, '0')}`, ...this.newLienReason } as LienReason,
      ...this.lienReasons
    ];
    this.newLienReason = {};
    this.toast('LIEN reason added.');
  }

  addMfProduct(): void {
    if (!this.newMfProduct.productName || !this.newMfProduct.amcName) {
      this.toast('Enter Product Name and AMC Name.');
      return;
    }
    this.mfProducts = [
      {
        productCode: `MFP-${String(this.mfProducts.length + 1).padStart(2, '0')}`,
        category: '',
        riskLevel: 'MODERATE',
        ...this.newMfProduct
      } as MutualFundProductMaster,
      ...this.mfProducts
    ];
    this.newMfProduct = {};
    this.toast('Mutual Fund product added.');
  }

  addSglBank(): void {
    if (!this.newSglBank.bankName) {
      this.toast('Enter Bank Name.');
      return;
    }
    this.sglBanks = [
      {
        sglCode: `SGL-${String(this.sglBanks.length + 1).padStart(2, '0')}`,
        branch: '',
        ...this.newSglBank
      } as SglBankMaster,
      ...this.sglBanks
    ];
    this.newSglBank = {};
    this.toast('SGL Bank master added.');
  }

  addDailyRate(): void {
    if (!this.newDailyRate.scriptCode || !this.newDailyRate.rateDate || this.newDailyRate.closeRate == null) {
      this.toast('Enter Rate Date, Script Code and Close Rate.');
      return;
    }
    const script = this.scripts.find((s) => s.scriptCode === this.newDailyRate.scriptCode);
    this.dailyScriptRates = [
      {
        scriptName: script?.scriptName || '',
        openRate: this.newDailyRate.closeRate,
        highRate: this.newDailyRate.closeRate,
        lowRate: this.newDailyRate.closeRate,
        ...this.newDailyRate
      } as DailyScriptRate,
      ...this.dailyScriptRates
    ];
    this.newDailyRate = {};
    this.toast('Daily script rate added.');
  }

  // -------------------- Export to Excel --------------------
  private exportSheets(): ExportSheetSpec[] {
    const title = this.masterLabels[this.activeTab];
    const one = (headers: string[], widths: number[], rows: (string | number | null)[][]): ExportSheetSpec[] => [
      { sheetName: title, title, headers, widths, rows }];

    switch (this.activeTab) {
      case 'party':
        return one(
          [
            'Party Code',
            'Party Name',
            'Type',
            'PAN No'
          ],
          [
            12,
            30,
            16,
            14
          ],
          this.parties.map((p) => [
            p.partyCode,
            p.partyName,
            p.partyType,
            p.panNo
          ])
        );
      case 'script':
        return one(
          [
            'Script Code',
            'Script Name',
            'Instrument',
            'ISIN',
            'Face Value/Unit'
          ],
          [
            16,
            30,
            16,
            16,
            16
          ],
          this.scripts.map((s) => [
            s.scriptCode,
            s.scriptName,
            s.instrumentType,
            s.isin,
            s.faceValuePerUnit
          ])
        );
      case 'subtype':
        return one(
          [
            'Code',
            'Sub Type',
            'Instrument'
          ],
          [
            10,
            24,
            16
          ],
          this.subTypes.map((s) => [
            s.subTypeCode,
            s.subTypeName,
            s.instrumentType
          ])
        );
      case 'broker':
        return one(
          [
            'Broker Code',
            'Broker Name',
            'Contact',
            'Empanelled On',
            'Status'
          ],
          [
            14,
            30,
            16,
            16,
            12
          ],
          this.brokers.map((b) => [
            b.brokerCode,
            b.brokerName,
            b.contactNo,
            b.empanelledOn,
            b.status
          ])
        );
      case 'control':
        return one(
          [
            'Parameter',
            'Value',
            'Description'
          ],
          [
            26,
            14,
            40
          ],
          this.controlParams.map((c) => [
            c.paramName,
            c.paramValue,
            c.description
          ])
        );
      case 'dailyscript':
        return one(
          [
            'Rate Date',
            'Script Code',
            'Script Name',
            'Open',
            'High',
            'Low',
            'Close'
          ],
          [
            14,
            16,
            26,
            12,
            12,
            12,
            12
          ],
          this.dailyScriptRates.map((r) => [
            r.rateDate,
            r.scriptCode,
            r.scriptName,
            r.openRate,
            r.highRate,
            r.lowRate,
            r.closeRate
          ])
        );
      case 'lien':
        return one(
          [
            'Reason Code',
            'Description'
          ],
          [
            14,
            40
          ],
          this.lienReasons.map((l) => [
            l.reasonCode,
            l.reasonDescription
          ])
        );
      case 'mfproduct':
        return one(
          [
            'Product Code',
            'Product Name',
            'AMC',
            'Category',
            'Risk'
          ],
          [
            14,
            30,
            24,
            20,
            12
          ],
          this.mfProducts.map((m) => [
            m.productCode,
            m.productName,
            m.amcName,
            m.category,
            m.riskLevel
          ])
        );
      case 'sglbank':
        return one(
          [
            'SGL Code',
            'Bank Name',
            'Branch'
          ],
          [
            14,
            30,
            24
          ],
          this.sglBanks.map((s) => [
            s.sglCode,
            s.bankName,
            s.branch
          ])
        );
      case 'marketdetail':
        return one(
          [
            'Script Code',
            'Market Price',
            'As On',
            'YTM %'
          ],
          [
            16,
            16,
            14,
            12
          ],
          this.marketDetails.map((m) => [
            m.scriptCode,
            m.marketPrice,
            m.asOnDate,
            m.ytm
          ])
        );
      default:
        return one([], [], []);
    }
  }

  async exportExcel(): Promise<void> {
    this.generating = true;
    try {
      await exportWorkbook(this.exportSheets(), `Investment-${this.masterLabels[this.activeTab]}`);
      this.toast(`${this.masterLabels[this.activeTab]} exported.`);
    } catch (err) {
      console.error('Investment Masters export failed', err);
      this.toast('Could not generate the workbook — please retry.');
    } finally {
      this.generating = false;
    }
  }

  private toast(msg: string): void {
    this.toastMsg = msg;
    this.toastVisible = true;
    if (this.toastTimer) {
      clearTimeout(this.toastTimer);
    }
    this.toastTimer = setTimeout(() => (this.toastVisible = false), 3200);
  }
}