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102 lines
3.5 KiB
TypeScript
102 lines
3.5 KiB
TypeScript
import type { UnavailableLook } from "@/api/look-api";
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import type { PluginRecord } from "@/plugin-host/plugin-store";
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import type { RegisteredLayout } from "./layout-registry";
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/** Why the repair view shows instead of the chosen layout. */
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export type RepairReason =
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/** ?safe-layout=1 in the address. */
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| "safe-url"
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/** TERMIX_SAFE_LAYOUT on the server. */
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| "safe-env"
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/** No installed plugin provides the layout. */
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| "missing"
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/** Its plugin is switched off. */
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| "disabled"
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/** Its plugin waits on a missing dependency or was refused. */
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| "blocked"
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/** Its plugin does not fit this Termix or plugin API. */
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| "incompatible"
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/** Its code threw while starting. */
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| "failed"
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/** It crashed while drawing, twice. */
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| "crashed";
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export type LayoutStatus =
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| { kind: "ok"; layout: RegisteredLayout }
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| { kind: "loading" }
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| {
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kind: "repair";
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reason: RepairReason;
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layoutId: string;
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pluginId?: string;
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version?: string | null;
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error?: string | null;
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};
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/** A crash this many times in a row hands over to the repair view. */
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export const MAX_LAYOUT_CRASHES = 2;
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export interface LayoutStatusInput {
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layoutId: string;
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safeFromUrl: boolean;
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safeFromEnv: boolean;
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/** The look and the plugin list have both been read. */
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ready: boolean;
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registered: RegisteredLayout | undefined;
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/** The installed plugin whose manifest declares the layout, if any. */
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owner: PluginRecord | undefined;
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/** A plugin the server skipped that declares the layout, if any. */
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unavailable: UnavailableLook | undefined;
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crashes: number;
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lastCrash: string | null;
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}
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/** Whether the chosen layout can be drawn, and why not when it cannot. */
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export function layoutStatus(input: LayoutStatusInput): LayoutStatus {
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const repair = (
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reason: RepairReason,
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extra: { error?: string | null } = {},
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): LayoutStatus => ({
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kind: "repair",
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reason,
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layoutId: input.layoutId,
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pluginId: input.owner?.summary.id ?? input.unavailable?.id,
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version: input.owner?.summary.version ?? input.unavailable?.version ?? null,
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error: extra.error ?? null,
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});
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if (input.safeFromUrl) return repair("safe-url");
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if (input.safeFromEnv) return repair("safe-env");
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if (input.crashes >= MAX_LAYOUT_CRASHES) {
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return repair("crashed", { error: input.lastCrash });
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}
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if (input.registered) return { kind: "ok", layout: input.registered };
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if (!input.ready) return { kind: "loading" };
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if (input.unavailable && !input.owner) {
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return repair("incompatible", { error: input.unavailable.error });
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}
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const owner = input.owner;
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if (!owner) return repair("missing");
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const summary = owner.summary;
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// Before the enabled check: the server reports a plugin that failed to
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// start as not enabled, which hid the real error behind "turned off".
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if (owner.frontend === "blocked" || summary.state === "blocked") {
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return repair("blocked", { error: owner.error ?? summary.lastError });
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}
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if (owner.frontend === "failed" || summary.state === "failed") {
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return repair("failed", { error: owner.error ?? summary.lastError });
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}
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if (!summary.enabled) return repair("disabled");
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if (owner.frontend === "loading") return { kind: "loading" };
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// Just chosen: the runtime is about to load its code.
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if (
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summary.frontend &&
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(owner.frontend === "inactive" || owner.frontend === "none")
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) {
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return { kind: "loading" };
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}
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// Running, but it never registered the layout it declares.
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return repair("missing");
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}
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