"use server";
import { revalidatePath } from "next/cache";
import { redirect } from "next/navigation";
import { api, unwrap } from "@/lib/api";
import { attempt, field, type ActionState } from "@/lib/actions";

const roles = ["user", "moderator", "admin"] as const;

/** Runs a change to a person from the console, then shows their page again. */
async function onPerson(form: FormData, change: (id: string) => Promise<string | void>): Promise<ActionState> {
  const id = field(form, "id");
  return attempt(async () => {
    const notice = await change(id);
    revalidatePath(`/console/people/${id}`);
    return notice;
  });
}

export async function setLinkCap(_: ActionState, form: FormData): Promise<ActionState> {
  return onPerson(form, async (id) => {
    const linkCap = Number(field(form, "linkCap"));
    const { person } = unwrap(await api.console.people({ id })["link-cap"].post({ linkCap }));
    return `Link cap set to ${person.linkCap}.`;
  });
}

export async function ban(_: ActionState, form: FormData): Promise<ActionState> {
  return onPerson(form, async (id) => {
    unwrap(await api.console.people({ id }).ban.post({ reason: field(form, "reason") }));
  });
}

export async function unban(_: ActionState, form: FormData): Promise<ActionState> {
  return onPerson(form, async (id) => {
    unwrap(await api.console.people({ id }).unban.post());
  });
}

export async function setRole(_: ActionState, form: FormData): Promise<ActionState> {
  return onPerson(form, async (id) => {
    const role = roles.find((r) => r === field(form, "role")) ?? "user";
    const { person } = unwrap(await api.console.people({ id }).role.post({ role }));
    return `Role set to ${person.role}.`;
  });
}

export async function decideCatalog(_: ActionState, form: FormData): Promise<ActionState> {
  const id = field(form, "id");
  const decision = field(form, "decision") === "approve" ? "approve" : "reject";
  return attempt(async () => {
    unwrap(await api.console.catalogs({ id })({ decision }).post());
    revalidatePath("/console/catalogs");
    revalidatePath("/catalogs");
  });
}

/** An account waiting for approval: approve it, or decline it (deleting it). */
export async function decideAccount(_: ActionState, form: FormData): Promise<ActionState> {
  const id = field(form, "id");
  const decline = field(form, "decision") === "decline";
  const state = await attempt(async () => {
    if (decline) unwrap(await api.console.people({ id }).decline.post());
    else unwrap(await api.console.people({ id }).approve.post());
    revalidatePath("/console", "layout");
  });
  if (decline && !state?.error) redirect("/console/people?waiting=true");
  return state;
}

export async function setRegistration(_: ActionState, form: FormData): Promise<ActionState> {
  return attempt(async () => {
    const registration = field(form, "registration") === "closed" ? "closed" : "open";
    unwrap(await api.console.settings.put({ registration }));
    revalidatePath("/console");
    return registration === "closed" ? "Registration closed: new accounts wait for approval." : "Registration open.";
  });
}