/**
 * Wire protocol for the control link to the master dashboard.
 *
 * Mirror of the block at the bottom of `autotrader-master/types.ts`, which is
 * the source of truth. The two repos deploy independently, so change both
 * together — and only ever by adding, since an instance and a master can be
 * running different versions of this file at the same time.
 */

export interface AccountTypeStats {
    accountTypeId: string | null;
    label: string;
    accountSize: number;
    totalAccounts: number;
    accountsTraded: number;
    inTrade: number;
    /** Of the accounts that finished trading today (traded, no open position):
     *  how many ended with the day's profit target hit, in profit but short of
     *  the target, or at a realized loss (an account locked out at the daily
     *  loss limit counts as a loss). Optional so an older master simply
     *  ignores them. */
    targetHit?: number;
    partial?: number;
    loss?: number;
}

export interface FirmStats {
    firm: string;
    totalAccounts: number;
    accountsTraded: number;
    inTrade: number;
    /** Day outcomes, as on AccountTypeStats. */
    targetHit?: number;
    partial?: number;
    loss?: number;
    /** Per account type, summing to the firm's own totals. Optional so a master
     *  on an older build simply ignores it. */
    accountTypes?: AccountTypeStats[];
}

export interface SchedulerState {
    running: boolean;
    action: 'Buy' | 'Sell' | 'Auto';
    symbol: string;
    lastRun: string | null;
    intervalSeconds: number;
    stopAfterAll?: boolean;
    /** Today's random session-open delay in minutes (1–20), drawn once per
     *  Central-time day. Optional so an older master simply ignores it. */
    sessionOpenDelayMin?: number;
}

export interface AutomationSummary {
    key: string;
    label: string;
    firm: string;
    inputs: { id: string; label: string; min: number; max: number; default: number }[];
}

export interface InstanceCapabilities {
    symbols: string[];
    automations: AutomationSummary[];
    runnerOnline: boolean;
}

// ── Firm catalog ─────────────────────────────────────────────────────────────
// Served by the master's public GET /api/firms/catalog and cached locally by
// lib/firm-catalog.ts. Credentials are per-machine and absent from all of it.

/** One account type as published by the master.
 *
 *  The field names match `AccountConfig` in types.ts on purpose — that is what
 *  lets the trading code consume a catalog account type wherever it used to
 *  read a local account_configs row. */
export interface CatalogAccountType {
    id: string;
    firmId: string;
    label: string;
    prefix: string;
    accountSize: number;
    profitTarget: number;
    consistency: number;
    minDayPnL: number;
    minTradingDays: number;
    maxLoss: number;
    maxPositionSize: number;
    targetSameEquity: boolean;
    /** False = big days trade as one unsplit leg instead of random ≥$800 pieces. */
    splitEnabled: boolean;
    /** True = CME holiday sessions count with the next full trading day, the way
     *  firms that follow CME clearing report them (e.g. Apex: Sun/Mon/Tue around
     *  a Monday holiday is ONE trading day, recorded on the Tuesday). */
    combineCmeHolidays: boolean;
    withdrawalStages: { profit: number; consistency: number; minTradingDays: number }[];
    /** ISO. Ties between two matching account types are broken by this. */
    updatedAt: string;
}

export interface CatalogFirm {
    id: string;
    name: string;
    /** Which platform the firm's accounts trade on. Only 'tradovate' firms get
     *  a client here; anything else is synced but sits idle until its trading
     *  logic exists. Older masters omit the field — treated as 'tradovate'. */
    platform: 'tradovate' | 'topstepx';
    bannedSymbols: string[];
    accountTypes: CatalogAccountType[];
    updatedAt: string;
}

export interface FirmCatalogPayload {
    version: number;
    updatedAt: string;
    firms: CatalogFirm[];
}

export interface FirmCatalogUnchanged {
    version: number;
    updatedAt: string;
    unchanged: true;
}

export type Command =
    | { kind: 'trade'; action: 'Buy' | 'Sell' | 'Auto'; symbol: string; stopAfterAll?: boolean }
    | { kind: 'stop-trading' }
    | { kind: 'autobuyer-run'; automationId: string; inputs?: Record<string, number> }
    | { kind: 'report-now' };

export type MasterMessage =
    /** personId is the person's stable uuid; the instance stores it and
     *  presents it on later hellos, which is what makes a rename follow the
     *  person. */
    | { type: 'welcome'; personId?: string }
    | { type: 'command'; id: string; command: Command };

export type InstanceMessage =
    | { type: 'hello'; instance: string; id?: string; capabilities: InstanceCapabilities }
    | { type: 'report'; firms: FirmStats[]; scheduler: SchedulerState; capabilities?: InstanceCapabilities }
    | { type: 'ack'; id: string; ok: boolean; result?: unknown; error?: string };