<?php
namespace Game\Entities;

use Game\Entities\Partner;

class Player extends Actor
{

    // Player特有的天赋名称
    public static array $talentNames = [
        'hp'      => '生命',
        'patk'    => '物攻',
        'matk'    => '魔攻',
        'pdef'    => '物防',
        'mdef'    => '魔防',
        'crit'    => '暴击',
        'critdmg' => '暴伤',
    ];

    // Player特有的NPC交互标记
    public array $npcFlags = [];

    // Player特有的同伴系统
    public int $maxPartners = 2;  // 最多可携带同伴数
    public array $partners = [];  // 已招募的同伴

    /**
     * 增加灵石
     */
    public function addSpiritStones(int $amount): void
    {
        $this->spiritStones += $amount;
    }

    /**
     * 扣除灵石（返回是否成功）
     */
    public function spendSpiritStones(int $amount): bool
    {
        if ($this->spiritStones >= $amount) {
            $this->spiritStones -= $amount;
            return true;
        }
        return false;
    }

    /**
     * 恢复生命值，不超过上限
     * @param int $amount 恢复量
     * @return int 实际恢复量
     */
    public function heal(int $amount): int
    {
        $stats = $this->getStats();
        $maxHp = $stats['maxHp'];

        $oldHp = $this->hp;
        $this->hp = min($this->hp + $amount, $maxHp);

        return $this->hp - $oldHp;
    }

    /**
     * 学习法术
     */
    public function learnSpell(int $spellId): bool
    {
        if (!isset($this->spells[$spellId])) {
            $this->spells[$spellId] = ['level' => 1];
            return true;
        }
        return false;
    }

    /**
     * 升级法术等级
     */
    public function upgradeSpell(int $spellId): bool
    {
        if (!isset($this->spells[$spellId])) {
            return false;
        }
        $this->spells[$spellId]['level'] = min($this->spells[$spellId]['level'] + 1, 10);
        return true;
    }

    /**
     * 检查是否已学习法术
     */
    public function hasSpell(int $spellId): bool
    {
        return isset($this->spells[$spellId]);
    }

    /**
     * 获取法术等级
     */
    public function getSpellLevel(int $spellId): int
    {
        return $this->spells[$spellId]['level'] ?? 0;
    }

    /**
     * 添加法术资源书
     */
    public function addSpellBook(int $spellId, int $quantity = 1): void
    {
        if (!isset($this->spellBooks[$spellId])) {
            $this->spellBooks[$spellId] = 0;
        }
        $this->spellBooks[$spellId] += $quantity;
    }

    /**
     * 消耗法术资源书
     */
    public function spendSpellBooks(int $spellId, int $quantity = 1): bool
    {
        if (($this->spellBooks[$spellId] ?? 0) >= $quantity) {
            $this->spellBooks[$spellId] -= $quantity;
            return true;
        }
        return false;
    }

    /**
     * 获取法术资源书数量
     */
    public function getSpellBookCount(int $spellId): int
    {
        return $this->spellBooks[$spellId] ?? 0;
    }

    /**
     * Player特有的经验获取，升级时会恢复生命值
     */
    public function gainExp(int $amount): bool
    {
        $this->exp += $amount;
        if ($this->exp >= $this->maxExp) {
            $this->level++;
            $this->exp -= $this->maxExp;
            $this->maxExp = (int)($this->maxExp * 1.5);

            // 升级获得天赋点（每级3点）并通过 autoAllocateTalents 自动分配
            $this->autoAllocateTalents(3);

            // 升级时恢复全部生命值
            $this->fullHeal();

            return true; // Leveled up
        }
        return false;
    }

    /**
     * Player特有的分配天赋点（返回布尔值）
     */
    public function allocateTalent(string $talent, int $points = 1): bool
    {
        if ($points <= 0 || $this->talentPoints < $points) {
            return false;
        }

        if (!isset($this->talents[$talent])) {
            return false;
        }

        $this->talents[$talent] += $points;
        $this->talentPoints -= $points;
        return true;
    }

    /**
     * Player特有的重置天赋（返还所有点数）
     */
    public function resetTalents(): int
    {
        $total = array_sum($this->talents);
        $this->talentPoints += $total;

        foreach ($this->talents as $key => $value) {
            $this->talents[$key] = 0;
        }

        return $total;
    }

    public function addItem(array $item)
    {
        // Handle stacking for consumables
        if (($item['type'] ?? '') === 'consume') {
            foreach ($this->inventory as &$existingItem) {
                // Check if it's the same item (compare name, heal, quality, level)
                // We exclude 'id' and 'quantity' from comparison
                $isSame = ($existingItem['name'] === $item['name']) &&
                          (($existingItem['heal'] ?? 0) === ($item['heal'] ?? 0)) &&
                          (($existingItem['quality'] ?? '') === ($item['quality'] ?? '')) &&
                          (($existingItem['level'] ?? 1) === ($item['level'] ?? 1));

                if ($isSame) {
                    $existingItem['quantity'] = ($existingItem['quantity'] ?? 1) + 1;
                    return;
                }
            }
        }

        // Assign a unique ID to the item to handle duplicates
        $item['id'] = uniqid();
        // Initialize quantity for new items
        $item['quantity'] = 1;
        $this->inventory[] = $item;
    }

    /**
     * 招募同伴
     */
    public function recruitPartner(Partner $partner): bool
    {
        if (count($this->partners) >= $this->maxPartners) {
            return false;
        }
        $this->partners[$partner->id] = $partner;
        return true;
    }

    /**
     * 解散同伴
     */
    public function dismissPartner(string $partnerId): bool
    {
        if (isset($this->partners[$partnerId])) {
            unset($this->partners[$partnerId]);
            return true;
        }
        return false;
    }

    /**
     * 获取同伴
     */
    public function getPartner(string $partnerId): ?Partner
    {
        return $this->partners[$partnerId] ?? null;
    }
}