import type { Abode } from "../types/Abode.js";
import type { ApikeyPermissions, ClientApikey } from "../types/Apikey.js";
import type { Resident, ResidentFlags } from "../types/Resident.js";
import type {
  Note,
  NoteProperties,
  PartialNote,
  PartialNoteProperties,
} from "../types/Note.js";
import type { ClientUser, PartialUser, UserFlags } from "../types/User.js";

export function pgToDate(d: Date | string): string {
  return d instanceof Date ? d.toISOString() : new Date(d).toISOString();
}

const defaultUserFlags: UserFlags = {};
export function pgToUserFlags(flags: unknown): UserFlags {
  const out = { ...defaultUserFlags };
  if (typeof flags !== "object" || !flags || Array.isArray(flags)) return out;
  const f = flags as Record<string, unknown>;
  if (f.admin === true) out.admin = true;
  return out;
}

export function pgToPartialUser(user: {
  uid: string;
  name: string;
  flags: unknown;
  created_at: Date | string;
  updated_at: Date | string;
}): PartialUser {
  return {
    uid: user.uid,
    name: user.name,
    flags: pgToUserFlags(user.flags),
    created_at: pgToDate(user.created_at),
    updated_at: pgToDate(user.updated_at),
  };
}
export function pgToClientUser(user: {
  uid: string;
  email: string;
  name: string;
  flags: unknown;
  created_at: Date | string;
  updated_at: Date | string;
}): ClientUser {
  return {
    ...pgToPartialUser(user),
    email: user.email,
  };
}

export function pgToAbode(abode: {
  aid: string;
  name: string;
  created_at: Date | string;
  created_by: string | null;
  updated_at: Date | string;
  updated_by: string | null;
}): Abode {
  return {
    aid: abode.aid,
    name: abode.name,
    created_at: pgToDate(abode.created_at),
    created_by: abode.created_by,
    updated_at: pgToDate(abode.updated_at),
    updated_by: abode.updated_by,
  };
}

const defaultResidentFlags: ResidentFlags = {};
export function pgToResidentFlags(flags: unknown): ResidentFlags {
  const out = { ...defaultResidentFlags };
  if (typeof flags !== "object" || !flags || Array.isArray(flags)) return out;
  const f = flags as Record<string, unknown>;
  if (f.admin === true) out.admin = true;
  return out;
}

export function pgToResident(resident: {
  uid: string;
  aid: string;
  flags: unknown;
  created_at: Date | string;
  created_by: string | null;
  updated_at: Date | string;
  updated_by: string | null;
}): Resident {
  return {
    uid: resident.uid,
    aid: resident.aid,
    flags: pgToResidentFlags(resident.flags),
    created_at: pgToDate(resident.created_at),
    created_by: resident.created_by,
    updated_at: pgToDate(resident.updated_at),
    updated_by: resident.updated_by,
  };
}

const defaultApikeyPermissions: ApikeyPermissions = {};
export function pgToApikeyPermissions(permissions: unknown): ApikeyPermissions {
  const out = { ...defaultApikeyPermissions };
  if (
    typeof permissions !== "object" ||
    !permissions ||
    Array.isArray(permissions)
  )
    return out;
  const p = permissions as Record<string, unknown>;
  if (p.admin === true) out.admin = true;
  if (p.all === true) out.all = true;
  for (const key of ["users", "residents", "abodes"] as const) {
    if (p[key] === "r" || p[key] === "rw") out[key] = p[key] as "r" | "rw";
  }
  for (const key of ["restrict_users", "restrict_abodes"] as const) {
    if (
      Array.isArray(p[key]) &&
      (p[key] as unknown[]).every((x) => typeof x === "string")
    ) {
      out[key] = p[key] as string[];
    }
  }
  return out;
}

export function pgToClientApikey(apikey: {
  uid: string;
  kid: string;
  name: string;
  permissions: unknown;
  created_at: Date | string;
  expires_at: Date | string | null;
}): ClientApikey {
  return {
    uid: apikey.uid,
    kid: apikey.kid,
    name: apikey.name,
    permissions: pgToApikeyPermissions(apikey.permissions),
    created_at: pgToDate(apikey.created_at),
    expires_at: apikey.expires_at ? pgToDate(apikey.expires_at) : null,
  };
}

const validNoteTypes = new Set(["note"]);

function pgToNoteProperties(properties: unknown): NoteProperties {
  if (
    typeof properties !== "object" ||
    !properties ||
    Array.isArray(properties)
  )
    return {};
  const value = properties as Record<string, unknown>;
  return validNoteTypes.has(value.type as string)
    ? { type: value.type as "note" }
    : {};
}

function pgToPartialNoteProperties(properties: unknown): PartialNoteProperties {
  return { type: pgToNoteProperties(properties).type ?? "note" };
}

export function pgToNote(note: {
  nid: string;
  aid: string;
  name: string;
  content: string;
  properties: unknown;
  created_at: Date | string;
  created_by: string | null;
  updated_at: Date | string;
  updated_by: string | null;
}): Note {
  return {
    nid: note.nid,
    aid: note.aid,
    name: note.name,
    content: note.content,
    properties: pgToNoteProperties(note.properties),
    created_at: pgToDate(note.created_at),
    created_by: note.created_by,
    updated_at: pgToDate(note.updated_at),
    updated_by: note.updated_by,
  };
}

export function pgToPartialNote(note: {
  nid: string;
  aid: string;
  name: string;
  properties: unknown;
  created_at: Date | string;
  created_by: string | null;
  updated_at: Date | string;
  updated_by: string | null;
}): PartialNote {
  return {
    nid: note.nid,
    aid: note.aid,
    name: note.name,
    properties: pgToPartialNoteProperties(note.properties),
    created_at: pgToDate(note.created_at),
    created_by: note.created_by,
    updated_at: pgToDate(note.updated_at),
    updated_by: note.updated_by,
  };
}