/**
 * @file Statistics panel component showing player progress and all-time stats.
 * @copyright nhcarrigan
 * @license Naomi's Public License
 * @author Naomi Carrigan
 */
/* eslint-disable react/no-multi-comp -- Sub-component is tightly coupled to the panel */
/* eslint-disable max-lines-per-function -- Complex component with many render paths */
/* eslint-disable react/require-default-props -- TypeScript optional props with default parameters are sufficient */
import { useGame } from "../../context/gameContext.js";
import { PRESTIGE_UPGRADES } from "../../data/prestigeUpgrades.js";
import type { JSX } from "react";

const formatDate = (timestamp: number): string => {
  return new Date(timestamp).toLocaleDateString("en-GB", {
    day:   "numeric",
    month: "short",
    year:  "numeric",
  });
};

interface StatCardProperties {
  readonly icon:  string;
  readonly label: string;
  readonly value: string;
  readonly sub?:  string | undefined;
}

/**
 * Renders a single statistic card.
 * @param props - The stat card properties.
 * @param props.icon - The icon to display.
 * @param props.label - The label for the stat.
 * @param props.value - The value to display.
 * @param props.sub - Optional sub-label.
 * @returns The JSX element.
 */
const StatCard = ({
  icon,
  label,
  value,
  sub = undefined,
}: StatCardProperties): JSX.Element => {
  return (
    <div className="profile-stat">
      <span className="profile-stat-icon">{icon}</span>
      <span className="profile-stat-value">{value}</span>
      <span className="profile-stat-label">{label}</span>
      {sub === undefined
        ? null
        : <span className="profile-stat-date">{sub}</span>
      }
    </div>
  );
};

/**
 * Renders the statistics panel with player progress and all-time stats.
 * @returns The JSX element.
 */
const StatisticsPanel = (): JSX.Element => {
  const { state, formatInteger, formatNumber } = useGame();

  if (state === null) {
    return (
      <section className="panel">
        <p>{"Loading..."}</p>
      </section>
    );
  }

  const {
    player,
    resources,
    prestige,
    bosses,
    quests,
    zones,
    adventurers,
    upgrades,
    equipment,
    achievements,
  } = state;

  const bossesDefeated = bosses.filter((boss) => {
    return boss.status === "defeated";
  }).length;
  const questsCompleted = quests.filter((quest) => {
    return quest.status === "completed";
  }).length;
  const zonesUnlocked = zones.filter((zone) => {
    return zone.status === "unlocked";
  }).length;
  const adventurersRecruited = adventurers.reduce((sum, adventurer) => {
    return sum + adventurer.count;
  }, 0);
  const equipmentOwned = equipment.filter((item) => {
    return item.owned;
  }).length;
  const upgradesPurchased = upgrades.filter((upgrade) => {
    return upgrade.purchased;
  }).length;
  const achievementsUnlocked = achievements.filter((achievement) => {
    return achievement.unlockedAt !== null;
  }).length;
  const prestigeUpgradesPurchased = prestige.purchasedUpgradeIds.length;

  return (
    <section className="panel statistics-panel">
      <h2>{"📊 Statistics"}</h2>

      <h3 className="stats-section-header">{"All-Time"}</h3>
      <div className="profile-stats">
        <StatCard
          icon="🪙"
          label="Total Gold Earned"
          sub="across all runs"
          value={formatNumber(player.totalGoldEarned)}
        />
        <StatCard
          icon="👆"
          label="Total Clicks"
          value={formatNumber(player.totalClicks)}
        />
        <StatCard icon="⭐" label="Prestiges" value={String(prestige.count)} />
        <StatCard
          icon="📅"
          label="Guild Founded"
          value={formatDate(player.createdAt)}
        />
        <StatCard
          icon="☁️"
          label="Last Cloud Save"
          value={formatDate(player.lastSavedAt)}
        />
        <StatCard
          icon="✖️"
          label="Production Multiplier"
          sub="from prestige"
          value={`×${prestige.productionMultiplier.toFixed(2)}`}
        />
      </div>

      <h3 className="stats-section-header">{"Current Run"}</h3>
      <div className="profile-stats">
        <StatCard icon="🪙" label="Gold" value={formatNumber(resources.gold)} />
        <StatCard
          icon="✨"
          label="Essence"
          value={formatNumber(resources.essence)}
        />
        <StatCard
          icon="💎"
          label="Crystals"
          value={formatInteger(resources.crystals)}
        />
        <StatCard
          icon="🔮"
          label="Runestones"
          sub="permanent currency"
          value={formatInteger(prestige.runestones)}
        />
      </div>

      <h3 className="stats-section-header">{"Progress"}</h3>
      <div className="profile-stats">
        <StatCard
          icon="👹"
          label="Bosses Defeated"
          value={`${String(bossesDefeated)} / ${String(bosses.length)}`}
        />
        <StatCard
          icon="📜"
          label="Quests Completed"
          value={`${String(questsCompleted)} / ${String(quests.length)}`}
        />
        <StatCard
          icon="🗺️"
          label="Zones Unlocked"
          value={`${String(zonesUnlocked)} / ${String(zones.length)}`}
        />
        <StatCard
          icon="⚔️"
          label="Adventurers Recruited"
          value={formatNumber(adventurersRecruited)}
        />
        <StatCard
          icon="🗡️"
          label="Equipment Owned"
          value={`${String(equipmentOwned)} / ${String(equipment.length)}`}
        />
        <StatCard
          icon="🔧"
          label="Upgrades Purchased"
          value={`${String(upgradesPurchased)} / ${String(upgrades.length)}`}
        />
        <StatCard
          icon="🏆"
          label="Achievements"
          value={`${String(achievementsUnlocked)} / ${String(achievements.length)}`}
        />
        <StatCard
          icon="🔮"
          label="Prestige Upgrades"
          value={`${String(prestigeUpgradesPurchased)} / ${String(PRESTIGE_UPGRADES.length)}`}
        />
      </div>
    </section>
  );
};

export { StatisticsPanel };