// Generated, do not edit. sha256:7c7ced19083e83a4f75c27b5aa8f303c04b02f88225373c3587d1d7f90e78248
import * as db from '../db.js';
import { CONFIG, ENUMS, PREFERENCES, SOURCE_CAPABILITIES, SOURCE_ENDPOINTS } from '../../shared/config.js';
import { placePriceSourceFirst, clearPriceSourceCell } from './price-source.js';
import { setPref } from './preferences.js';
import { emitChange } from './_events.js';
import { assertEnum, assertName, assertTimestamp, nowIso } from './_shared.js';
import { fail, isAppError } from '../../shared/app-error.js';
import { getPriceAt, upsertPriceHistory } from './price-history.js';
import { createAccount, deleteAccount, listAccounts } from './accounts.js';
import { createEvent, eventsCountByAccount } from './events.js';
import { createValuation, listValuations } from './valuations.js';
import { positionAt } from './positions.js';
import { assertValidName as assertValidPortfolioName } from '../portfolios.mjs';
import { createPortfolio } from '../portfolios-admin.mjs';
import { isAiActive } from '../ai/gate.js';

const signaleerVoorstellen = () => emitChange('ai-proposals-changed');

const PROPOSAL_JOIN = `
  SELECT AiProposal.*, Asset.symbol AS asset_symbol, Asset.name AS asset_name,
         Asset.unit AS asset_unit, Asset.subunit AS asset_subunit,
         Asset.decimals AS asset_decimals, Asset.displayUnit AS asset_display_unit,
         Asset.kind AS asset_kind,
         fromAccount.name AS from_name, toAccount.name AS to_name,
         targetAccount.name AS account_name, targetAccount.kind AS account_kind,
         Provider.name AS provider_name
  FROM AiProposal
  LEFT JOIN Asset ON Asset.id = AiProposal.assetId
  LEFT JOIN Provider ON AiProposal.kind = 'source_choice' AND Provider.key = AiProposal.key
  LEFT JOIN Account AS fromAccount ON fromAccount.id = AiProposal.fromAccountId
  LEFT JOIN Account AS toAccount ON toAccount.id = AiProposal.toAccountId
  LEFT JOIN Account AS targetAccount ON targetAccount.id = AiProposal.accountId`;

const RICHTING = Object.freeze({
  buy:      Object.freeze({ van: false, naar: true }),
  sell:     Object.freeze({ van: true,  naar: false }),
  transfer: Object.freeze({ van: true,  naar: true }),
  interest: Object.freeze({ van: false, naar: true }),
});

function bronVoorKeuze(assetId, capability, providerKey) {
  const asset = db.one(`SELECT symbol FROM Asset WHERE id = ?`, [assetId]);
  if (!asset) throw new Error(`Asset ${assetId} does not exist.`);
  const bron = db.one(`SELECT id, isSystem FROM Provider WHERE key = ?`, [String(providerKey ?? '')]);
  if (!bron || bron.isSystem) throw new Error(`Unknown price source '${providerKey}'.`);
  if (!db.one(`SELECT 1 AS x FROM ProviderCoverage WHERE providerId = ? AND symbol = ?`, [bron.id, asset.symbol])) {
    throw new Error(`Price source '${providerKey}' does not cover ${asset.symbol}.`);
  }
  const eindpunten = SOURCE_ENDPOINTS[capability];
  if (!db.one(`SELECT 1 AS x FROM ProviderEndpoint WHERE providerId = ? AND capability IN (${eindpunten.map(() => '?').join(',')})`,
              [bron.id, ...eindpunten])) {
    throw new Error(`Price source '${providerKey}' delivers no ${capability}.`);
  }
  return bron.id;
}

const CONTROLE = Object.freeze({
  price_point: (v) => {
    if (v.assetId == null) throw new Error('A price-point proposal needs an asset.');
    if (v.fiatPrice == null) throw new Error('A price-point proposal needs a price in euro.');
    assertTimestamp('observedAt', v.observedAt);
  },
  account: (v) => {
    assertName('Accountnaam', v.name);
    assertEnum('accountKind', ENUMS.ACCOUNT_KIND, v.accountKind);
    if (v.isOwnCustody == null) throw new Error('An account proposal has to say whether it is own custody.');
  },
  account_delete: (v) => {
    if (v.accountId == null) throw new Error('A deletion proposal has to say WHICH account.');
    if (!listAccounts().some(a => a.id === v.accountId)) {
      throw new Error(`Account ${v.accountId} no longer exists.`);
    }
  },
  portfolio: (v) => {
    assertName('Portefeuillenaam', v.name);
    assertValidPortfolioName(v.name);
    assertEnum('currency', CONFIG.PORTFOLIO.BASE_CURRENCIES, v.currency);
  },
  preference: (v) => {
    if (!CONFIG.AI.PROPOSABLE_PREF_SCOPES.includes(v.scope)) {
      throw new Error(`A proposal may not set the preference scope '${v.scope}'.`);
    }
    if (!PREFERENCES[v.scope]?.[v.key]) {
      throw new Error(`Unknown preference: ${v.scope}.${v.key}.`);
    }
    try { JSON.parse(v.value); }
    catch { throw new Error(`The value of ${v.scope}.${v.key} is not valid JSON.`); }
  },
  source_choice: (v) => {
    if (v.assetId == null) throw new Error('A source-choice proposal needs an asset.');
    assertEnum('scope', SOURCE_CAPABILITIES, v.scope);
    assertEnum('value', ENUMS.SOURCE_CHOICE_ACTION, v.value);
    bronVoorKeuze(v.assetId, v.scope, v.key);
  },
  valuation: (v) => {
    if (v.assetId == null) throw new Error('A balance proposal needs an asset.');
    if (v.accountId == null) throw new Error('A balance proposal needs an account.');
    if (!Number.isInteger(v.balance) || v.balance < 0) {
      throw new Error(`A balance proposal needs a balance >= 0 in the smallest unit (got ${v.balance}).`);
    }
    assertTimestamp('observedAt', v.observedAt);
  },
  event: (v) => {
    if (v.assetId == null) throw new Error('An event proposal needs an asset.');
    assertEnum('eventType', ENUMS.LEDGER_EVENT_TYPE, v.eventType);
    if (!Number.isInteger(v.amount) || v.amount <= 0) {
      throw new Error(`An event proposal needs an amount > 0 in the smallest unit (got ${v.amount}).`);
    }
    assertTimestamp('observedAt', v.observedAt);
    const richting = RICHTING[v.eventType];
    if (richting.van && v.fromAccountId == null) {
      throw new Error(`An event of kind '${v.eventType}' needs an origin account.`);
    }
    if (richting.naar && v.toAccountId == null) {
      throw new Error(`An event of kind '${v.eventType}' needs a destination account.`);
    }
    if (!richting.van && v.fromAccountId != null) {
      throw new Error(`An event of kind '${v.eventType}' has no origin account.`);
    }
    if (!richting.naar && v.toAccountId != null) {
      throw new Error(`An event of kind '${v.eventType}' has no destination account.`);
    }
    if ((v.eventType === 'buy' || v.eventType === 'sell') && v.fiatPrice == null) {
      throw new Error(`An event of kind '${v.eventType}' needs a price in euro.`);
    }
  },
});

export async function createAiProposal({
  kind, assetId = null, accountId = null, fromAccountId = null, toAccountId = null,
  name = null, accountKind = null, isOwnCustody = null,
  eventType = null, amount = null, fiatPrice = null, fiatFee = null, unitFee = null, balance = null,
  observedAt = null, scope = null, key = null, value = null, currency = null, note = null,
}) {
  assertEnum('kind', ENUMS.AI_PROPOSAL_KIND, kind);
  if (balance != null && kind !== 'valuation') {
    throw new Error(`A balance belongs to a valuation; a proposal of kind '${kind}' has none.`);
  }
  if ((fiatFee != null || unitFee != null) && kind !== 'event') {
    throw new Error(`Fees belong to an event; a proposal of kind '${kind}' has none.`);
  }
  if (unitFee != null && eventType !== 'sell' && eventType !== 'transfer') {
    throw new Error(`A fee in units belongs to a sell or a transfer; an event of kind '${eventType}' has none.`);
  }
  if ((scope != null || key != null || value != null) && kind !== 'preference' && kind !== 'source_choice') {
    throw new Error(`A preference belongs to a preference proposal; kind '${kind}' has none.`);
  }
  if (currency != null && kind !== 'portfolio') {
    throw new Error(`A currency belongs to a portfolio proposal; kind '${kind}' has none.`);
  }
  const eigenBeheer = isOwnCustody == null ? null : (isOwnCustody ? 1 : 0);
  CONTROLE[kind]({ assetId, accountId, fromAccountId, toAccountId, name, accountKind, isOwnCustody: eigenBeheer, eventType, amount, fiatPrice, balance, observedAt, scope, key, value, currency });

  db.run(`INSERT INTO AiProposal
          (assetId, accountId, fromAccountId, toAccountId, kind, name, accountKind, isOwnCustody,
           eventType, amount, fiatPrice, fiatFee, unitFee, balance, observedAt, scope, key, value, currency, note, status, createdAt)
          VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,'pending',?)`,
    [assetId, accountId, fromAccountId, toAccountId, kind, name, accountKind, eigenBeheer,
     eventType, amount, fiatPrice, fiatFee, unitFee, balance, observedAt, scope, key, value, currency, note, nowIso()]);
  const id = db.lastId();
  signaleerVoorstellen();
  await db.persist();
  return id;
}

export function listPendingAiProposals() {
  if (!isAiActive()) return [];
  return db.all(`${PROPOSAL_JOIN} WHERE AiProposal.status = 'pending' ORDER BY AiProposal.id ASC`)
    .map(verrijkBalans);
}

function verrijkBalans(rij) {
  if (rij.kind !== 'valuation') return rij;
  return {
    ...rij,
    ledger_balance: positionAt(rij.accountId, rij.assetId, rij.observedAt),
    events_before: eventsCountByAccount(rij.accountId, rij.assetId, rij.observedAt),
  };
}

export function listAiProposals(limit = CONFIG.AI.PROPOSAL_PAGE_SIZE) {
  if (!isAiActive()) return [];
  const n = Number.isInteger(limit) && limit > 0 ? limit : CONFIG.AI.PROPOSAL_PAGE_SIZE;
  return db.all(`${PROPOSAL_JOIN} ORDER BY AiProposal.id DESC LIMIT ?`, [n]);
}

export function aiProposalsStatus() {
  return { enabled: isAiActive(), pending: listPendingAiProposals() };
}

export function getAiProposal(id) {
  return db.one(`${PROPOSAL_JOIN} WHERE AiProposal.id = ?`, [id]);
}

const HERKOMST_VAN = Object.freeze({
  event: 'createdEventId',
  account: 'createdAccountId',
  valuation: 'createdValuationId',
});

export function rowOrigin(soort, rijId) {
  const kolom = HERKOMST_VAN[soort];
  if (!kolom) throw new Error(`Unknown kind for an origin query: '${soort}'.`);
  if (!Number.isInteger(Number(rijId))) return null;
  const r = db.one(
    `SELECT id, kind, note, createdAt, resolvedAt FROM AiProposal
     WHERE ${kolom} = ? AND status = 'accepted' ORDER BY id DESC LIMIT 1`, [Number(rijId)]);
  if (!r) return null;
  return {
    proposalId: r.id, kind: r.kind, note: r.note,
    createdAt: r.createdAt, resolvedAt: r.resolvedAt,
  };
}

const UITVOEREN = Object.freeze({
  price_point: async (voorstel) => {
    const seconden = Math.floor(Date.parse(voorstel.observedAt) / 1000);
    if (!Number.isFinite(seconden)) fail('aiProposals.unreadableMoment', { id: voorstel.id, moment: voorstel.observedAt }, `Unreadable moment in proposal ${voorstel.id}: ${voorstel.observedAt}.`);
    await upsertPriceHistory(voorstel.assetId, [{ time: seconden, price: voorstel.fiatPrice }], 'manual', 'day');
  },

  account: async (voorstel) => {
    const id = await createAccount({
      name: voorstel.name,
      kind: voorstel.accountKind,
      isOwnCustody: !!voorstel.isOwnCustody,
      scanEnabled: false,
      taxCategory: null,
    });
    return { kolom: 'createdAccountId', id };
  },

  account_delete: async (voorstel) => {
    await deleteAccount(voorstel.accountId);
  },

  event: async (voorstel) => {
    const id = await createEvent({
      assetId: voorstel.assetId,
      type: voorstel.eventType,
      occurredAt: voorstel.observedAt,
      amount: voorstel.amount,
      fiatPrice: voorstel.fiatPrice ?? null,
      fiatFee: voorstel.fiatFee ?? null,
      unitFee: voorstel.unitFee ?? null,
      fromAccountId: voorstel.fromAccountId,
      toAccountId: voorstel.toAccountId,
      source: 'manual',
      note: voorstel.note,
    });
    return { kolom: 'createdEventId', id };
  },

  portfolio: async (voorstel) => {
    await createPortfolio(voorstel.name, { baseCurrency: voorstel.currency });
  },

  preference: async (voorstel) => {
    if (!CONFIG.AI.PROPOSABLE_PREF_SCOPES.includes(voorstel.scope)) {
      fail('aiProposals.prefScopeNotAllowed', { scope: voorstel.scope },
        `This proposal wants to set the preference scope '${voorstel.scope}', which is not allowed.`);
    }
    await setPref(voorstel.scope, voorstel.key, JSON.parse(voorstel.value));
  },

  source_choice: async (voorstel) => {
    const providerId = bronVoorKeuze(voorstel.assetId, voorstel.scope, voorstel.key);
    if (voorstel.value === 'first') await placePriceSourceFirst(voorstel.assetId, voorstel.scope, providerId);
    else await clearPriceSourceCell(voorstel.assetId, voorstel.scope, providerId);
  },

  valuation: async (voorstel) => {
    const dag = voorstel.observedAt.slice(0, 10);
    const dubbel = listValuations().some(v =>
      v.assetId === voorstel.assetId && v.accountId === voorstel.accountId && v.valuedOn === dag);
    if (dubbel) {
      fail('aiProposals.duplicateValuation', { dag }, `A balance for this account and asset on ${dag} already exists.`);
    }
    const seconden = Math.floor(Date.parse(voorstel.observedAt) / 1000);
    if (!Number.isFinite(seconden)) fail('aiProposals.unreadableMoment', { id: voorstel.id, moment: voorstel.observedAt }, `Unreadable moment in proposal ${voorstel.id}: ${voorstel.observedAt}.`);
    const punt = getPriceAt(voorstel.assetId, seconden);
    if (!punt || punt.fiatPrice == null) {
      fail('aiProposals.noPriceForBalance', { dag },
        `No price in the history for ${dag}, and a balance cannot do without one.`);
    }
    const id = await createValuation({
      assetId: voorstel.assetId,
      accountId: voorstel.accountId,
      valuedOn: dag,
      balance: voorstel.balance,
      fiatRate: punt.fiatPrice,
      rateAt: voorstel.observedAt,
      source: 'manual',
    });
    return { kolom: 'createdValuationId', id };
  },
});

const HERKOMST_KOLOMMEN = Object.freeze(['createdEventId', 'createdAccountId', 'createdValuationId']);

const detailVan = (e) => (isAppError(e)
  ? JSON.stringify({ key: e.key, params: e.params || undefined })
  : ((e && e.message) || String(e)));

export async function acceptAiProposal(id) {
  const voorstel = getAiProposal(id);
  if (!voorstel) fail('aiProposals.unknownProposal', { id }, `Proposal ${id} no longer exists.`);
  if (voorstel.status !== 'pending') {
    fail(`aiProposals.handled_${voorstel.status}`, { id },
      `Proposal ${id} has already been handled (${voorstel.status}).`);
  }
  const uitvoeren = UITVOEREN[voorstel.kind];
  if (!uitvoeren) throw new Error(`No execution known for proposal kind '${voorstel.kind}'.`);

  let herkomst = null;
  try {
    herkomst = await uitvoeren(voorstel);
  } catch (e) {
    db.run(`UPDATE AiProposal SET detail = ? WHERE id = ?`, [detailVan(e), id]);
    signaleerVoorstellen();
    await db.persist();
    throw e;
  }

  const kolom = herkomst && HERKOMST_KOLOMMEN.includes(herkomst.kolom) ? herkomst.kolom : null;
  if (kolom && Number.isInteger(Number(herkomst.id))) {
    db.run(`UPDATE AiProposal SET status = 'accepted', detail = NULL, resolvedAt = ?, ${kolom} = ?
            WHERE id = ?`, [nowIso(), Number(herkomst.id), id]);
  } else {
    db.run(`UPDATE AiProposal SET status = 'accepted', detail = NULL, resolvedAt = ? WHERE id = ?`,
      [nowIso(), id]);
  }
  signaleerVoorstellen();
  await db.persist();
  return id;
}

export async function acceptAiProposals(ids) {
  const uitkomsten = [];
  for (const id of ids) {
    try {
      await acceptAiProposal(id);
      uitkomsten.push({ id, ok: true, reden: null });
    } catch (e) {
      uitkomsten.push({ id, ok: false, reden: e.message, key: e.key || null, params: e.params || null });
    }
  }
  return uitkomsten;
}

export async function rejectAiProposal(id, reden = null) {
  const voorstel = getAiProposal(id);
  if (!voorstel) fail('aiProposals.unknownProposal', { id }, `Proposal ${id} no longer exists.`);
  if (voorstel.status !== 'pending') {
    fail(`aiProposals.handled_${voorstel.status}`, { id },
      `Proposal ${id} has already been handled (${voorstel.status}).`);
  }
  db.run(`UPDATE AiProposal SET status = 'rejected', detail = ?, resolvedAt = ? WHERE id = ?`,
    [reden, nowIso(), id]);
  signaleerVoorstellen();
  await db.persist();
  return id;
}

export async function rejectAiProposals(ids, reden = null) {
  const uitkomsten = [];
  for (const id of ids) {
    try {
      await rejectAiProposal(id, reden);
      uitkomsten.push({ id, ok: true, reden: null });
    } catch (e) {
      uitkomsten.push({ id, ok: false, reden: e.message, key: e.key || null, params: e.params || null });
    }
  }
  return uitkomsten;
}