"use server";
// Managing a catalog from the console: settings, key, team, members, invitations, what it hosts, suspension.
import { revalidatePath } from "next/cache";
import { api, unwrap } from "@/lib/api";
import { attempt, field, type ActionState } from "@/lib/actions";

/** Runs a change to a catalog, then shows its pages again. */
async function onCatalog(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/catalogs/${id}`);
    revalidatePath(`/catalogs/${id}`);
    revalidatePath("/console/catalogs");
    revalidatePath("/catalogs");
    return notice;
  });
}

const pick = <T extends string>(v: string, options: readonly T[]): T | undefined => options.find((o) => o === v);

export async function saveCatalog(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    unwrap(
      await api.catalogs({ id }).patch({
        name: field(form, "name"),
        url: field(form, "url"),
        contact: field(form, "contact"),
        visibility: pick(field(form, "visibility"), ["public", "private"] as const),
        membership: pick(field(form, "membership"), ["open", "approval", "invite"] as const),
        maxRating: pick(field(form, "maxRating"), ["general", "adult"] as const),
        uploads: pick(field(form, "uploads"), ["anyone", "members", "team"] as const),
        mirrors: pick(field(form, "mirrors"), ["auto", "approve", "off"] as const),
      }),
    );
    return "Saved.";
  });
}

export async function rotateKey(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    const { key } = unwrap(await api.catalogs({ id }).key.post());
    return `New key (shown once; put it in the catalog's CATALOG_KEY and restart it): ${key}`;
  });
}

export async function setSuspended(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    if (field(form, "intent") === "reinstate") unwrap(await api.catalogs({ id }).reinstate.post());
    else unwrap(await api.catalogs({ id }).suspend.post({ reason: field(form, "reason") }));
  });
}

export async function addOperator(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    const username = field(form, "username");
    unwrap(await api.catalogs({ id }).team({ username }).put({ role: "catalog-operator" }));
    return `${username} is an operator now.`;
  });
}

export async function removeFromTeam(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    unwrap(await api.catalogs({ id }).team({ username: field(form, "username") }).delete({}, { query: { role: "catalog-operator" } }));
  });
}

/** A member or request: approve, decline, add, ban, unban or remove. */
export async function decideMember(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    const member = api.catalogs({ id }).members({ username: field(form, "username") });
    switch (field(form, "decision")) {
      case "approve":
      case "add":
        unwrap(await member.put({ status: "member" }));
        break;
      case "ban":
        unwrap(await member.put({ status: "banned" }));
        break;
      default: // decline, unban, remove
        unwrap(await member.delete());
    }
  });
}

export async function createInvite(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    const maxUses = Number(field(form, "maxUses")) || undefined;
    const expiresInDays = Number(field(form, "expiresInDays")) || undefined;
    const { invite } = unwrap(await api.catalogs({ id }).invites.post({ maxUses, expiresInDays }));
    return `Invitation link: ${invite.url}`;
  });
}

export async function revokeInvite(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    unwrap(await api.catalogs({ id }).invites({ code: field(form, "code") }).delete());
  });
}

export async function delist(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    const product = field(form, "product");
    unwrap(await api.catalogs({ id }).products({ product }).delete({}, { query: { reason: field(form, "reason") } }));
    revalidatePath(`/products/${product}`);
  });
}

/** Someone joins a catalog (or asks to), with an invitation code if they have one; or leaves it. */
export async function membership(_: ActionState, form: FormData): Promise<ActionState> {
  return onCatalog(form, async (id) => {
    if (field(form, "intent") === "leave") {
      unwrap(await api.catalogs({ id }).join.delete());
      revalidatePath("/library");
      return "You left.";
    }
    const invite = field(form, "invite");
    const { membership } = unwrap(await api.catalogs({ id }).join.post(invite ? { invite } : {}));
    revalidatePath("/library");
    return membership === "member" ? "You're a member." : "Asked. The catalog's team will decide.";
  });
}