import type { ParsedBondGroup } from './BondTypes';

/** 解析 Skill.group：`partnerWeapon1Id,targetType,attrType,attrValue,...` */
export function parseSkillGroup(raw: string): ParsedBondGroup | null {
    const trimmed = String(raw ?? '').trim();
    if (!trimmed) return null;
    const nums = trimmed.split(',').map(Number);
    if (nums.length < 4 || !Number.isFinite(nums[0]) || !Number.isFinite(nums[1])) return null;

    const attrs: Array<{ type: number; value: number }> = [];
    for (let i = 2; i + 1 < nums.length; i += 2) {
        const type = nums[i];
        const value = nums[i + 1];
        if (!Number.isFinite(type) || !Number.isFinite(value)) continue;
        attrs.push({ type, value });
    }
    if (attrs.length === 0) return null;

    return {
        partnerWeapon1Id: nums[0],
        targetType: nums[1],
        attrs,
    };
}