import { resolveAyanamsa } from "./ayanamsa.ts";
import { applyPersistedBirthTime, birthTimePersistenceValues } from "./birth-time-intake-model.ts";
import { readChartBirthFingerprint } from "./chart-birth-truth.ts";
import { selectedBirthPlace } from "./home-profile.ts";
import type { Profile } from "./home-types.ts";
import type { ProfileGender } from "./profile-gender.ts";

/**
 * The owner's own profile write (`PATCH /api/account`), shared by the home
 * onboarding and the 星盘档案 edit view (TASK-self-edit-avatar-menu-20260928
 * S1, BUG-1081). The owner is never a `chart_profiles` row; every birth-data
 * save goes through the account route, which checks `birth_time_source` and
 * derives the birth-time status on the server.
 *
 * Birth-data saves never carry `gender` (TASK-consult-gender-optional): the
 * owner's gender is its own one-field PATCH, so a birth-data save can never
 * clear it.
 */
export function selfProfilePatchBody(nextProfile: Profile) {
  const birthPlace = selectedBirthPlace(nextProfile);
  return {
    name: nextProfile.name.trim() || null,
    birth_date: nextProfile.date || null,
    ...birthTimePersistenceValues(nextProfile),
    country_code: nextProfile.countryCode,
    province_code: nextProfile.provinceCode || null,
    city_code: nextProfile.cityCode || null,
    district_code: nextProfile.districtCode || null,
    birth_place_label: nextProfile.birthPlaceLabel || null,
    birth_place_type: nextProfile.birthPlaceType || null,
    birth_place_provider: nextProfile.birthPlaceProvider || null,
    birth_place_provider_id: nextProfile.birthPlaceProviderId || null,
    latitude: birthPlace?.lat ?? null,
    longitude: birthPlace?.lon ?? null,
    timezone_id: nextProfile.timezoneId || null,
    timezone_offset: birthPlace?.tz ?? null,
    timezone_source: nextProfile.timezoneSource || null,
    ayanamsa: resolveAyanamsa(nextProfile),
  };
}

export type SelfProfileSaved = Readonly<{
  /** The draft with the birth-time truth the server returned applied. */
  profile: Profile;
  /** The chart page's `profileFingerprint` of the saved row, when the route returned one. */
  fingerprint: string | null;
}>;

type Fetch = typeof fetch;

export async function saveSelfProfile(nextProfile: Profile, fetchImpl: Fetch = fetch): Promise<SelfProfileSaved> {
  const response = await fetchImpl("/api/account", {
    method: "PATCH",
    credentials: "same-origin",
    headers: { "content-type": "application/json" },
    body: JSON.stringify(selfProfilePatchBody(nextProfile)),
  });
  const payload = await response.json().catch(() => null) as {
    error?: string;
    birthTime?: unknown;
    chartBirth?: { fingerprint?: unknown };
  } | null;
  if (!response.ok) {
    throw new Error(payload?.error || "账户资料暂时无法保存。");
  }
  const savedProfile = applyPersistedBirthTime(nextProfile, payload?.birthTime);
  return { profile: savedProfile, fingerprint: readChartBirthFingerprint(payload) };
}

/** The owner's optional gender, on its own; null clears it. */
export async function saveSelfGender(gender: ProfileGender | null, fetchImpl: Fetch = fetch): Promise<void> {
  const response = await fetchImpl("/api/account", {
    method: "PATCH",
    credentials: "same-origin",
    headers: { "content-type": "application/json" },
    body: JSON.stringify({ gender }),
  });
  const payload = await response.json().catch(() => null) as { error?: string } | null;
  if (!response.ok) throw new Error(payload?.error || "性别没保存上，再试一次。");
}