/** 控糖树等级配置（前后端算法需保持一致：每级 50 积分，最高 Lv.9） */
export const TREE_MAX_LEVEL = 9
export const TREE_XP_PER_LEVEL = 50

export const TREE_LEVELS = [
    { level: 0, name: '种子眠', emoji: '🫘', mood: '困困', desc: '稳糖种子在土里打盹' },
    { level: 1, name: '破土芽', emoji: '🌱', mood: '探头', desc: '探出第一抹新绿' },
    { level: 2, name: '展两叶', emoji: '🌿', mood: '好奇', desc: '两片嫩叶迎风展' },
    { level: 3, name: '小树苗', emoji: '🪴', mood: '精神', desc: '身子骨硬朗起来' },
    { level: 4, name: '青枝繁', emoji: '🌳', mood: '茁壮', desc: '枝叶渐密，元气足' },
    { level: 5, name: '拔节高', emoji: '🌲', mood: '挺拔', desc: '一节一节往上蹿' },
    { level: 6, name: '稳糖冠', emoji: '💚', mood: '沉稳', desc: '树冠成形，习惯成自然' },
    { level: 7, name: '初绽香', emoji: '🌸', mood: '开心', desc: '枝头冒出第一朵花' },
    { level: 8, name: '漫开花', emoji: '🌺', mood: '灿烂', desc: '花开满枝，越记越稳' },
    { level: 9, name: '圆满树', emoji: '🏆', mood: '荣耀', desc: '满级大树，习惯大师' }
]

const WHISPERS_BY_LEVEL = {
    0: ['种子在睡觉，记一笔就醒啦。', '今天浇第一滴水，芽就要冒出来。'],
    1: ['破土啦！再坚持几天就长高。', '小芽最喜欢规律的记录了。'],
    2: ['两片叶子为你鼓掌。', '空腹餐后都记全，我会长得更快。'],
    3: ['我已经是一棵小树啦。', '家人点赞的时候，我也会发光。'],
    4: ['枝叶越来越密，您真棒。', '连续记录，我会开出更多叶子。'],
    5: ['拔节中！习惯比完美更重要。', '再浇一点水，我就更高啦。'],
    6: ['习惯成自然，树冠成形啦。', '您今天的坚持，小树都记得。'],
    7: ['开花啦！闻到春天的味道了吗？', '稳糖花只开给坚持的人。'],
    8: ['满树花香，您已是控糖达人。', '明天继续来，花儿会更艳。'],
    9: ['满级大树陪您一路稳糖。', '圆满不是终点，习惯才是。']
}

export function calcTreeFromPoints(points) {
    const pts = Math.max(0, Number(points) || 0)
    const level = Math.min(TREE_MAX_LEVEL, Math.floor(pts / TREE_XP_PER_LEVEL))
    const xpInLevel = level >= TREE_MAX_LEVEL ? TREE_XP_PER_LEVEL : pts % TREE_XP_PER_LEVEL
    const progress = level >= TREE_MAX_LEVEL ? 100 : Math.round((xpInLevel / TREE_XP_PER_LEVEL) * 100)
    const meta = TREE_LEVELS[level] || TREE_LEVELS[0]
    const nextMeta = level < TREE_MAX_LEVEL ? TREE_LEVELS[level + 1] : null
    const pointsToNext = level >= TREE_MAX_LEVEL ? 0 : TREE_XP_PER_LEVEL - xpInLevel
    return {
        level,
        progress,
        name: meta.name,
        emoji: meta.emoji,
        mood: meta.mood,
        desc: meta.desc,
        xpInLevel,
        xpNeed: TREE_XP_PER_LEVEL,
        pointsToNext,
        nextName: nextMeta?.name || '',
        isMax: level >= TREE_MAX_LEVEL
    }
}

export function pickTreeWhisper(level) {
    const lv = Math.min(TREE_MAX_LEVEL, Math.max(0, Number(level) || 0))
    const list = WHISPERS_BY_LEVEL[lv] || WHISPERS_BY_LEVEL[0]
    return list[Math.floor(Math.random() * list.length)]
}