palette

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187// Palette effects load catalogs and run selections in their owning plugins.
// Search tickets preserve the baseline's rule that an older response cannot replace a newer one.
import * as Effect from "effect/Effect";
import * as Scope from "effect/Scope";
import * as Stream from "effect/Stream";
import * as z from "zod";
import type { KeyConflict, PaletteProviderInfo } from "convergence";
import { App, Host, Kernel, Notify, Services, Views } from "convergence/effect";
import type { HostError, KernelCallFailed } from "convergence/effect";
import type { Settings } from "../settings/contract.ts";
import type { Mode } from "./model.ts";
import { commandLabel, modeOf, rankChats, rankCommands, remember } from "./model.ts";
import { PaletteState } from "./state.ts";

export interface Row {
  kind: "command" | "item" | "chat";
  id: string;
  title: string;
  positions: readonly number[];
  key: string | null;
  detail: string;
  conflict?: KeyConflict | null;
  run: Effect.Effect<unknown, HostError | KernelCallFailed>;
}

export const controller = Effect.fn("Palette.controller")(function* () {
  const state = yield* PaletteState;
  const host = yield* Host;
  const kernel = yield* Kernel;
  const app = yield* App;
  const notify = yield* Notify;
  const views = yield* Views;
  const services = yield* Services;
  const scope = yield* Scope.Scope;
  const update = () => state.view?.update();
  const close = () => {
    if (state.open) {
      state.open = null;
      update();
    }
  };
  const show = Effect.fn("Palette.show")(function* (kind: "commands" | "chats") {
    state.open = kind;
    state.query = "";
    state.selected = 0;
    state.found = { key: "", items: [] };
    update();
    yield* views.focus("palette-input");
  });
  const openCommands = Effect.fn("Palette.openCommands")(function* () {
    if (state.open === "commands") return close();
    const [commands, providers] = yield* Effect.all(
      [kernel.call("commands", {}), kernel.call("palette.providers", {})],
      { concurrency: "unbounded" },
    );
    state.commands = commands.commands;
    state.providers = providers.providers;
    yield* show("commands");
  });
  const openChats = Effect.fn("Palette.openChats")(function* () {
    if (state.open === "chats") return close();
    const [chats, workspaces, commands, providers] = yield* Effect.all(
      [
        host.call("host/chats.list", {}),
        host.call("host/workspaces.list", {}),
        kernel.call("commands", {}),
        kernel.call("palette.providers", {}),
      ],
      { concurrency: "unbounded" },
    );
    state.chats = chats.chats;
    state.workspaces = Object.fromEntries(workspaces.workspaces.map((workspace) => [workspace.id, workspace]));
    state.commands = commands.commands;
    state.providers = providers.providers;
    yield* show("chats");
  });
  const runCommand = Effect.fn("Palette.runCommand")(function* (id: string) {
    state.recent = remember(state.recent, id);
    // The baseline launches persistence before running the command, without waiting for it.
    yield* Effect.forkIn(host.call("host/storage.set", { key: "recentCommands", value: state.recent }), scope, {
      startImmediately: true,
    });
    const { ran } = yield* kernel.call("run_command", { id });
    if (!ran) yield* notify.warning(`${id} did not run: its plugin is not running.`);
  });
  const rows = (): Row[] => {
    if (!state.open) return [];
    const mode: Mode<PaletteProviderInfo> =
      state.open === "commands" ? { mode: "commands", query: state.query } : modeOf(state.query, state.providers);
    if (mode.mode === "commands")
      return rankCommands(state.commands, mode.query, state.recent).map(({ command, positions }) => ({
        kind: "command",
        id: command.id,
        title: commandLabel(command),
        positions,
        key: command.labels?.[0] ?? null,
        conflict: command.conflict ?? null,
        detail: command.pluginTitle ?? command.plugin,
        run: runCommand(command.id),
      }));
    if (mode.mode === "provider") {
      const provider = mode.provider;
      const found = state.found.key === searchKey(provider, mode.query) ? state.found.items : [];
      return found.map((item) => ({
        kind: "item",
        id: `${provider.plugin}/${item.id}`,
        title: String(item.title ?? item.id),
        positions: [],
        key: null,
        detail: item.detail ?? provider.title ?? provider.plugin,
        run: kernel.call("palette.run", { plugin: provider.plugin, id: provider.id, item }),
      }));
    }
    return rankChats(state.chats, state.workspaces, mode.query).map(({ chat, positions }) => ({
      kind: "chat",
      id: chat.id,
      title: chat.title || "New Chat",
      positions,
      key: null,
      detail: state.workspaces[chat.workspaceId]?.name ?? "",
      run: app.select(chat.id, chat.workspaceId),
    }));
  };
  const search = Effect.fn("Palette.search")(function* (provider: PaletteProviderInfo, query: string) {
    const key = searchKey(provider, query);
    const ticket = ++state.searching;
    yield* kernel.call("palette.search", { plugin: provider.plugin, id: provider.id, query }).pipe(
      Effect.matchEffect({
        onSuccess: (answer) =>
          Effect.sync(() => {
            if (ticket !== state.searching) return;
            state.found = { key, items: answer.items };
            update();
          }),
        onFailure: Effect.fn("Palette.searchFailed")(function* (error) {
          if (ticket !== state.searching) return;
          state.found = { key, items: [] };
          yield* notify.error(`${provider.title ?? provider.plugin}: ${error.message}`);
          update();
        }),
      }),
    );
  });
  const pick = Effect.fn("Palette.pick")(function* (list: readonly Row[], selected: number) {
    const chosen = list[selected];
    close();
    if (chosen)
      yield* chosen.run.pipe(
        Effect.catchTag(["HostCallFailed", "KernelCallFailed", "PermissionNotGranted", "NeedsReview"], (error) =>
          notify.error(`${chosen.title}: ${error.message}`),
        ),
      );
  });
  const assign = Effect.fn("Palette.assign")(function* (id: string) {
    close();
    const client = state.settings;
    // Without the settings plugin there is no Keyboard Shortcuts page; the
    // shared request the baseline wrote would have had no reader either.
    if (!client) return;
    yield* client.showShortcuts({ query: id }).pipe(
      // A call that loses its provider on the way behaves like no reader.
      Effect.ignore,
    );
  });
  const loadRecent = Effect.fn("Palette.loadRecent")(function* () {
    const { value } = yield* host.call("host/storage.get", { key: "recentCommands" });
    // Invalid saved entries were ignored by the JavaScript palette as well.
    const saved = z.array(z.unknown()).safeParse(value);
    if (saved.success) state.recent = saved.data.filter((id): id is string => typeof id === "string");
  });
  // Assign needs the settings plugin; the client is kept while it runs.
  const followSettings = Effect.fn("Palette.followSettings")(function* () {
    yield* services.when<typeof Settings>("convergence/settings").pipe(
      Stream.runForEach((option) =>
        Effect.sync(() => {
          state.settings = option._tag === "Some" ? option.value : undefined;
        }),
      ),
      Effect.forkIn(scope, { startImmediately: true }),
    );
  });
  yield* followSettings();
  return { state, rows, close, openCommands, openChats, search, pick, assign, loadRecent };
});

const searchKey = (provider: PaletteProviderInfo, query: string) => `${provider.plugin}/${provider.id}/${query}`;
export type Controller = Effect.Success<ReturnType<typeof controller>>;