import type {
  OutreachResponseStatus,
  OutreachSalesStatus,
  OutreachSendStatus,
} from "./dashboard-model";

export const FOLLOW_UP_DUE_DELAY_MS = 7 * 24 * 60 * 60 * 1000;
export const DO_NOT_CONTACT_RECHECK_MS = 365 * 24 * 60 * 60 * 1000;

export type FollowUpPromptState = "not_ready" | "pending" | "due" | "suppressed";

export const manualSalesStatusLabels: Record<OutreachSalesStatus, string> = {
  follow_up_planned: "Follow-up geplant",
  follow_up_sent: "Follow-up gesendet",
  reply_received: "Antwort erhalten",
  not_interested: "Kein Interesse",
  later: "Später wieder melden",
  meeting_scheduled: "Gespräch vereinbart",
  proposal_requested: "Angebot angefragt",
  proposal_sent: "Angebot gesendet",
  won: "Auftrag gewonnen",
  lost: "Auftrag verloren",
  do_not_pursue: "Nicht weiter verfolgen",
};

const suppressingSalesStatuses = new Set<OutreachSalesStatus>([
  "reply_received",
  "not_interested",
  "do_not_pursue",
  "follow_up_sent",
]);

const suppressingResponseStatuses = new Set<OutreachResponseStatus>([
  "manual_reply_recorded",
  "no_interest",
]);

export function getManualSalesStatusLabel(status: OutreachSalesStatus) {
  return manualSalesStatusLabels[status];
}

export function shouldCreateFollowUpDraftAfterSend(input: {
  existingFollowUpOutreachCount: number;
  followUpDraft?: string | null;
  salesStatus: OutreachSalesStatus;
  sendStatus: OutreachSendStatus;
}) {
  return (
    input.sendStatus === "sent" &&
    input.salesStatus === "follow_up_planned" &&
    input.existingFollowUpOutreachCount === 0 &&
    Boolean(input.followUpDraft?.trim())
  );
}

export function getFollowUpPromptState(input: {
  followUpDueAt?: number | null;
  responseStatus: OutreachResponseStatus;
  salesStatus: OutreachSalesStatus;
  now: number;
}): FollowUpPromptState {
  if (
    suppressingSalesStatuses.has(input.salesStatus) ||
    suppressingResponseStatuses.has(input.responseStatus)
  ) {
    return "suppressed";
  }

  if (typeof input.followUpDueAt !== "number") {
    return "not_ready";
  }

  return input.now >= input.followUpDueAt ? "due" : "pending";
}

export function getDoNotContactRecheckState(input: {
  doNotContactUntil?: number | null;
  now: number;
}) {
  if (typeof input.doNotContactUntil !== "number") {
    return { status: "none" as const, label: "Offen" };
  }

  if (input.now >= input.doNotContactUntil) {
    return { status: "recheck" as const, label: "Erneut prüfen" };
  }

  return { status: "blocked" as const, label: "Nicht erneut kontaktieren" };
}