discord-decomp/lib/Frecency.tsx

// Metro module 4273 (f4274).
import Module12 from "../_bundle/Module12";
import Module3771 from "../_bundle/Module3771";
let DEFAULT_WEIGHT;
const DEFAULT_FRECENCY = (a0, a1, a2) => Math.ceil(a0 * (a1 / a2.numOfRecentUses));
DEFAULT_WEIGHT = (a0) => a0 <= 3 ? 100 : a0 <= 15 ? 70 : a0 <= 30 ? 50 : a0 <= 45 ? 30 : a0 <= 80 ? 10 : 1;
class Frecency {
  constructor({ computeBonus, computeWeight = DEFAULT_WEIGHT, computeFrecency = DEFAULT_FRECENCY, calculateMaxTotalUse = false, lookupKey, afterCompute, numFrequentlyItems = 32, maxSamples = 10 }) {
    this.computeBonus = computeBonus;
    this.computeWeight = computeWeight;
    this.computeFrecency = computeFrecency;
    this.calculateMaxTotalUse = calculateMaxTotalUse;
    this.afterCompute = afterCompute;
    this.lookupKey = lookupKey;
    this.usageHistory = {};
    this.frequently = [];
    this.maxSamples = maxSamples;
    this.numFrequentlyItems = numFrequentlyItems;
    this.dirty = false;
    this.version = 0;
  }
  overwriteHistory(a0, a1) {
    this.usageHistory = Module12.mapValues(a0 == null ? {} : a0, (a0) => ({
      ...a0,
      frecency: -1
    }));
    if (a1 != null) {
      a1.forEach((item) => this.track(item.key, {
        timestamp: item.timestamp
      }));
    }
    this.markDirty();
  }
  markDirty() {
    this.dirty = true;
    this.version = this.version + 1;
  }
  isDirty() {
    return this.dirty;
  }
  track(a0, r3 = {}) {
    let r33, length2, maxSamples2;
    let timestamp = r3.timestamp;
    let usesSinceLastTrack = r3.usesSinceLastTrack;
    if (a0 != null) {
      const r11 = Object.hasOwn(this.usageHistory, a0) ? this.usageHistory[a0] : void 0;
      if (r11 == null) {
        if (usesSinceLastTrack == null) {
          usesSinceLastTrack = 1;
        }
        if (timestamp == null) {
          timestamp = Date.now();
        }
        r33 = {
          totalUses: usesSinceLastTrack,
          recentUses: [timestamp],
          frecency: -1,
          score: 0
        };
      } else {
        r11.frecency = -1;
        r11.totalUses = r11.totalUses + (usesSinceLastTrack == null ? 1 : usesSinceLastTrack);
        if (timestamp == null) {
          r11.recentUses.push(Date.now());
        } else {
          r11.recentUses.push(timestamp);
          r11.recentUses.sort();
        }
        const length = r11.recentUses.length;
        const maxSamples = this.maxSamples;
        r33 = r11;
        if (length > maxSamples) {
          do {
            r11.recentUses.shift();
            length2 = r11.recentUses.length;
            maxSamples2 = this.maxSamples;
            r33 = r11;
          } while (length2 > maxSamples2);
        }
      }
      this.usageHistory[a0] = r33;
      this.markDirty();
    }
  }
  getEntry(a0) {
    let r1 = null;
    if (a0 != null) {
      if (this.dirty) {
        this.compute();
      }
      r1 = Object.prototype.hasOwnProperty.call(this.usageHistory, a0) ? this.usageHistory[a0] : void 0;
    }
    return r1;
  }
  getScore(a0) {
    const entry = this.getEntry(a0);
    return entry != null ? entry.score : null;
  }
  getFrecency(a0) {
    const entry = this.getEntry(a0);
    return entry != null ? entry.frecency : null;
  }
  compute() {
    let c14070_1 = Module3771();
    let c14070_0 = this.calculateMaxTotalUse ? Module12.maxBy(Object.values(this.usageHistory), (a0) => a0.totalUses) : null;
    Module12.forEach(this.usageHistory, (a0, a1) => {
      let c25020_1;
      let c25020_0 = a0;
      const { totalUses, recentUses } = a0;
      if (a0.frecency === -1) {
        c25020_1 = this.computeBonus(a1) / 100;
        a0.score = 0;
        Module12.forEach(recentUses, (a0, a1) => {
          if (a1 >= this.maxSamples) {
            return false;
          }
          const r20 = this.computeWeight(c14070_1.diff(Module3771(a0), "days"));
          c25020_0.score = c25020_0.score + c25020_1 * r20;
        });
        if (a0.score > 0) {
          if (a0.recentUses.length > 0) {
            a0.frecency = this.computeFrecency(totalUses, a0.score, {
              numOfRecentUses: recentUses.length,
              maxTotalUse: c14070_0?.totalUses
            });
          }
          this.usageHistory[a1] = a0;
        } else {
          delete this.usageHistory[a1];
        }
      }
    });
    this.frequently = Module12(this.usageHistory).map((item, index) => {
      const r4 = this.lookupKey(index);
      return r4 != null ? [r4, item.frecency] : null;
    }).filter((item) => item !== null).sortBy((item) => {
      const [, r13] = item;
      return -r13;
    }).map((item) => {
      const [r8] = item;
      return r8;
    }).take(this.numFrequentlyItems).value();
    this.dirty = false;
    this.afterCompute(this.usageHistory, this._frequently);
  }
  get frequently() {
    if (this.dirty) {
      this.compute();
    }
    return this._frequently;
  }
  set frequently(a0) {
    this._frequently = a0;
  }
}
export default Frecency;