<?php
namespace Game\Entities;

class Partner extends Actor
{
    public $id;
    // Partner特有的天赋加成（与 Actor 不同）
    public static array $talentBonus = [
        'hp'      => 20,
        'patk'    => 5,
        'matk'    => 4,
        'pdef'    => 3,
        'mdef'    => 3,
        'crit'    => 2,
        'critdmg' => 10,
    ];

    public function __construct(array $data)
    {
        $this->id = $data['id'];
        $this->name = $data['name'];
        $this->level = $data['level'] ?? 1;
        $this->exp = $data['exp'] ?? 0;
        $this->maxExp = $data['maxExp'] ?? (int)(100 * pow(1.5, $this->level - 1));

        $this->patk = $data['patk'] ;
        $this->matk = $data['matk'] ;
        $this->pdef = $data['pdef'] ;
        $this->mdef = $data['mdef'] ;
        $this->crit = $data['crit'] ;
        $this->critdmg = $data['critdmg'] ?? 130;
        $this->maxHp = $data['maxHp'];
        $this->hp = $data['hp'] ?? $data['maxHp'];
        // 装备和天赋系统
        $this->equip = $data['equip'] ?? [];
        $this->talents = $data['talents'] ?? $this->talents;
        $this->talentWeights = $data['talentWeights'] ?? $this->talentWeights;

        // 加载技能槽位数据 (新法术系统)
        $this->mana = $data['mana'] ?? $this->mana;
        $this->maxMana = $data['maxMana'] ?? 100;
        $this->skillSlots = $data['skillSlots'] ?? $this->skillSlots;
    }

    /**
     * 根据权重自动分配天赋点
     * 重要: HP（生命值）总是必须至少加1点
     */
    private function autoAllocateTalent(int $points): void
    {
        $totalWeight = array_sum($this->talentWeights);
        if ($totalWeight <= 0) {
            $totalWeight = 7; // 默认平均分配
        }

        // 按权重分配点数
        $remaining = $points;
        $allocated = [];

        foreach ($this->talentWeights as $talent => $weight) {
            $share = (int)floor($points * $weight / $totalWeight);
            $allocated[$talent] = $share;
            $remaining -= $share;
        }

        // 关键: 确保 HP 至少获得1点（HP是必须的）
        if ($allocated['hp'] < 1) {
            $allocated['hp'] = 1;
            $remaining--;
        }

        // 剩余点数按权重优先分配
        $sortedTalents = $this->talentWeights;
        arsort($sortedTalents);

        foreach ($sortedTalents as $talent => $weight) {
            if ($remaining <= 0) break;
            $allocated[$talent]++;
            $remaining--;
        }

        // 应用分配
        foreach ($allocated as $talent => $addPoints) {
            $this->talents[$talent] += $addPoints;
        }
    }

    /**
     * Partner特有的升级逻辑，自动分配天赋点
     */
    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);

            // 升级时自动分配3点天赋（根据权重，且 HP 至少加1点）
            $this->autoAllocateTalent(3);

            return true;
        }
        return false;
    }

    /**
     * 获取总天赋点数
     */
    public function getTotalTalentPoints(): int
    {
        return array_sum($this->talents);
    }

    /**
     * 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;
    }
}