import { get, put, subscribe } from "./api.js";
export const tabs = ["transcript", "changes", "files", "inbox", "project"];
export const state = {
    me: undefined,
    projects: [],
    tasks: new Map(),
    sessions: new Map(),
    inbox: [],
    selectedTaskId: undefined,
    transcript: [],
    pinned: undefined,
    connected: false,
    focus: { tabs: ["transcript"], tab: "transcript" },
    leadSessions: [],
    leadTranscript: [],
};
const listeners = new Map();
export function on(topic, fn) {
    let set = listeners.get(topic);
    if (!set) {
        set = new Set();
        listeners.set(topic, set);
    }
    set.add(fn);
    return () => set.delete(fn);
}
export function onEach(topics, fn) {
    const offs = topics.map((t) => on(t, fn));
    return () => {
        for (const off of offs) {
            off();
        }
    };
}
export function activeTasks() {
    return state.projects.flatMap((project) => (state.tasks.get(project.id) ?? []).filter((t) => t.status === "active").map((task) => ({ project, task })));
}
export function notify(topic, detail) {
    for (const fn of listeners.get(topic) ?? []) {
        fn(detail);
    }
}
export function findTask(id) {
    for (const tasks of state.tasks.values()) {
        const task = tasks.find((t) => t.id === id);
        if (task) {
            return task;
        }
    }
    return undefined;
}
export function currentSession(taskId) {
    return state.sessions.get(taskId)?.findLast((s) => s.state !== "completed") ?? state.sessions.get(taskId)?.at(-1);
}
export function currentLead() {
    return state.leadSessions.findLast((s) => s.state !== "completed") ?? state.leadSessions.at(-1);
}
export function snapshots() {
    return state.transcript.filter((e) => e.kind === "snapshot.created").map((e) => e.payload);
}
export function pinSnapshot(n) {
    state.pinned = n;
    notify("pin");
}
export async function loadMe() {
    state.me = await get("/api/me");
    notify("me");
}
export async function loadProjects() {
    state.projects = await get("/api/projects");
    await Promise.all(state.projects.map((p) => loadTasks(p.id)));
    notify("projects");
}
export async function loadTasks(projectId) {
    const tasks = await get("/api/projects/{projectId}/tasks", { path: { projectId } });
    state.tasks.set(projectId, tasks);
    await Promise.all(tasks.filter((t) => t.status === "active").map((t) => loadSessions(t.id)));
    notify("tasks");
}
export async function loadSessions(taskId) {
    state.sessions.set(taskId, await get("/api/tasks/{taskId}/sessions", { path: { taskId } }));
    notify("sessions", taskId);
}
export async function loadInbox() {
    state.inbox = await get("/api/inbox");
    notify("inbox");
}
export async function loadLeadSessions() {
    state.leadSessions = await get("/api/me/lead/sessions");
    notify("lead.sessions");
}
export async function loadFocus() {
    applyFocus(await get("/api/me/focus"));
}
export function applyFocus(f) {
    state.focus = f;
    const hash = f.task_id ? `#/task/${f.task_id}` : f.project_id ? `#/project/${f.project_id}` : "#/";
    if (location.hash !== hash && !(hash === "#/" && location.hash === "")) {
        location.hash = hash;
    }
    notify("focus");
}
export function focusedProject() {
    return state.projects.find((p) => p.id === state.focus.project_id);
}
export async function setFocus(change) {
    const taskId = change.task_id === undefined ? state.focus.task_id : (change.task_id ?? undefined);
    const projectId = taskId ? findTask(taskId)?.project_id : change.project_id === undefined ? state.focus.project_id : (change.project_id ?? undefined);
    const next = { tabs: state.focus.tabs, tab: change.tab ?? state.focus.tab };
    if (taskId) {
        next.task_id = taskId;
    }
    if (projectId) {
        next.project_id = projectId;
    }
    applyFocus(next);
    applyFocus(await put("/api/me/focus", { body: next }));
}
export function focusTask(taskId, tab = "transcript") {
    setFocus({ task_id: taskId, tab }).catch((err) => console.error("set focus", err));
}
export function focusProject(projectId) {
    setFocus({ task_id: null, project_id: projectId, tab: "project" }).catch((err) => console.error("set focus", err));
}
export function focusTab(tab) {
    setFocus({ tab }).catch((err) => console.error("set focus", err));
}
class Feed {
    transcriptTopic;
    streamTopic;
    store;
    events = [];
    last = 0;
    buffer = [];
    timer = 0;
    constructor(transcriptTopic, streamTopic, store) {
        this.transcriptTopic = transcriptTopic;
        this.streamTopic = streamTopic;
        this.store = store;
    }
    reset() {
        clearTimeout(this.timer);
        this.timer = 0;
        this.buffer = [];
        this.events = [];
        this.last = 0;
        this.store(this.events);
    }
    push = (ev) => {
        this.buffer.push(ev);
        if (!this.timer) {
            this.timer = setTimeout(() => this.flush(), 0);
        }
    };
    flush() {
        const events = this.buffer;
        this.buffer = [];
        this.timer = 0;
        let stored = [];
        for (const ev of events) {
            if (ev.seq !== 0) {
                stored.push(ev);
                continue;
            }
            this.append(stored);
            stored = [];
            notify(this.streamTopic, ev);
        }
        this.append(stored);
    }
    append(events) {
        const fresh = events.filter((ev) => ev.seq > this.last);
        if (fresh.length === 0) {
            return;
        }
        this.events.push(...fresh);
        this.last = fresh.at(-1).seq;
        notify(this.transcriptTopic, fresh);
    }
}
const taskFeed = new Feed("transcript", "stream", (events) => {
    state.transcript = events;
});
const leadFeed = new Feed("lead.transcript", "lead.stream", (events) => {
    state.leadTranscript = events;
});
let closeTaskStream;
const visitsKey = "byre.visits";
export function lastVisits() {
    return JSON.parse(localStorage.getItem(visitsKey) ?? "{}");
}
function markVisited(taskId) {
    if (!taskId) {
        return;
    }
    localStorage.setItem(visitsKey, JSON.stringify({ ...lastVisits(), [taskId]: Date.now() }));
}
export function selectTask(taskId) {
    markVisited(state.selectedTaskId);
    markVisited(taskId);
    closeTaskStream?.();
    closeTaskStream = undefined;
    taskFeed.reset();
    state.selectedTaskId = taskId;
    state.pinned = undefined;
    notify("selection");
    if (!taskId) {
        return;
    }
    closeTaskStream = subscribe(0, { task_id: taskId }, taskFeed.push, () => undefined);
}
export function startLeadStream() {
    leadFeed.reset();
    subscribe(0, { lead: true }, leadFeed.push, () => undefined);
}
export function handleEvent(ev) {
    if (ev.seq === 0) {
        notify("event", ev);
        return;
    }
    switch (ev.kind) {
        case "user.updated":
            if (ev.payload["login"] === state.me?.login) {
                void loadMe();
            }
            break;
        case "project.created":
            void loadProjects();
            break;
        case "task.created":
        case "task.merge_title":
        case "task.merged":
        case "task.discarded":
            if (ev.project_id) {
                void loadTasks(ev.project_id);
            }
            break;
        case "session.created":
        case "session.state":
        case "session.model":
            if (ev.owner) {
                void loadLeadSessions();
            }
            else if (ev.task_id) {
                void loadSessions(ev.task_id);
            }
            break;
        case "inbox.created":
        case "inbox.updated":
            void loadInbox();
            break;
        case "focus.updated":
            if (ev.actor !== state.me?.login) {
                applyFocus(ev.payload);
            }
            break;
    }
    notify("event", ev);
}
//# sourceMappingURL=state.js.map