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import { c as _c } from "react/compiler-runtime";

import React, { createContext, useCallback, useContext, useEffect, useMemo } from 'react';

import { saveCurrentProjectConfig } from '../utils/config.js';

export type StatsStore = {

increment(name: string, value?: number): void;

set(name: string, value: number): void;

observe(name: string, value: number): void;

add(name: string, value: string): void;

getAll(): Record<string, number>;

};

function percentile(sorted: number[], p: number): number {

const index = p / 100 * (sorted.length - 1);

const lower = Math.floor(index);

const upper = Math.ceil(index);

if (lower === upper) {

return sorted[lower]!;

}

return sorted[lower]! + (sorted[upper]! - sorted[lower]!) * (index - lower);

}

const RESERVOIR_SIZE = 1024;

type Histogram = {

reservoir: number[];

count: number;

sum: number;

min: number;

max: number;

};

export function createStatsStore(): StatsStore {

const metrics = new Map<string, number>();

const histograms = new Map<string, Histogram>();

const sets = new Map<string, Set<string>>();

return {

increment(name: string, value = 1) {

metrics.set(name, (metrics.get(name) ?? 0) + value);

},

set(name: string, value: number) {

metrics.set(name, value);

},

observe(name: string, value: number) {

let h = histograms.get(name);

if (!h) {

h = {

reservoir: [],

count: 0,

sum: 0,

min: value,

max: value

};

histograms.set(name, h);

}

h.count++;

h.sum += value;

if (value < h.min) {

h.min = value;

}

if (value > h.max) {

h.max = value;

}

// Reservoir sampling (Algorithm R)

if (h.reservoir.length < RESERVOIR_SIZE) {

h.reservoir.push(value);

} else {

const j = Math.floor(Math.random() * h.count);

if (j < RESERVOIR_SIZE) {

h.reservoir[j] = value;

}

}

},

add(name: string, value: string) {

let s = sets.get(name);

if (!s) {

s = new Set();

sets.set(name, s);

}

s.add(value);

},

getAll() {

const result: Record<string, number> = Object.fromEntries(metrics);

for (const [name, h] of histograms) {

if (h.count === 0) {

continue;

}

result[`${name}_count`] = h.count;

result[`${name}_min`] = h.min;

result[`${name}_max`] = h.max;

result[`${name}_avg`] = h.sum / h.count;

const sorted = [...h.reservoir].sort((a, b) => a - b);

result[`${name}_p50`] = percentile(sorted, 50);

result[`${name}_p95`] = percentile(sorted, 95);

result[`${name}_p99`] = percentile(sorted, 99);

}

for (const [name, s] of sets) {

result[name] = s.size;

}

return result;

}

};

}

export const StatsContext = createContext<StatsStore | null>(null);

type Props = {

store?: StatsStore;

children: React.ReactNode;

};

export function StatsProvider(t0) {

const $ = _c(7);

const {

store: externalStore,

children

} = t0;

let t1;

if ($[0] === Symbol.for("react.memo_cache_sentinel")) {

t1 = createStatsStore();

$[0] = t1;

} else {

t1 = $[0];

}

const internalStore = t1;

const store = externalStore ?? internalStore;

let t2;

let t3;

if ($[1] !== store) {

t2 = () => {

const flush = () => {

const metrics = store.getAll();

if (Object.keys(metrics).length > 0) {

saveCurrentProjectConfig(current => ({

...current,

lastSessionMetrics: metrics

}));

}

};

process.on("exit", flush);

return () => {

process.off("exit", flush);

};

};

t3 = [store];

$[1] = store;

$[2] = t2;

$[3] = t3;

} else {

t2 = $[2];

t3 = $[3];

}

useEffect(t2, t3);

let t4;

if ($[4] !== children || $[5] !== store) {

t4 = <StatsContext.Provider value={store}>{children}</StatsContext.Provider>;

$[4] = children;

$[5] = store;

$[6] = t4;

} else {

t4 = $[6];

}

return t4;

}

export function useStats() {

const store = useContext(StatsContext);

if (!store) {

throw new Error("useStats must be used within a StatsProvider");

}

return store;

}

export function useCounter(name) {

const $ = _c(3);

const store = useStats();

let t0;

if ($[0] !== name || $[1] !== store) {

t0 = value => store.increment(name, value);

$[0] = name;

$[1] = store;

$[2] = t0;

} else {

t0 = $[2];

}

return t0;

}

export function useGauge(name) {

const $ = _c(3);

const store = useStats();

let t0;

if ($[0] !== name || $[1] !== store) {

t0 = value => store.set(name, value);

$[0] = name;

$[1] = store;

$[2] = t0;

} else {

t0 = $[2];

}

return t0;

}

export function useTimer(name) {

const $ = _c(3);

const store = useStats();

let t0;

if ($[0] !== name || $[1] !== store) {

t0 = value => store.observe(name, value);

$[0] = name;

$[1] = store;

$[2] = t0;

} else {

t0 = $[2];

}

return t0;

}

export function useSet(name) {

const $ = _c(3);

const store = useStats();

let t0;

if ($[0] !== name || $[1] !== store) {

t0 = value => store.add(name, value);

$[0] = name;

$[1] = store;

$[2] = t0;

} else {

t0 = $[2];

}

return t0;

}