import { TREE_LEVELS, TREE_MAX_LEVEL, TREE_XP_PER_LEVEL } from './treeLevels.js'

/** 可选树种：每级 emoji 与 treeLevels.js Lv.0～9 一一对应 */
export const TREE_SPECIES_LIST = [
    {
        id: 'classic',
        name: '稳糖灵树',
        tagline: '经典路线，从种子到圆满',
        stages: TREE_LEVELS.map((l) => l.emoji)
    },
    {
        id: 'bonsai',
        name: '雅韵盆景',
        tagline: '小巧精致，书桌旁的温柔陪伴',
        stages: ['🫘', '🌱', '🪴', '🎋', '🪴', '🌳', '🎍', '🌸', '🏵️', '🏆']
    },
    {
        id: 'pine',
        name: '苍劲青松',
        tagline: '挺拔向上，越记越稳',
        stages: ['🫘', '🌱', '🌿', '🌲', '🌲', '🌲', '⛰️', '🌲', '🏔️', '🏆']
    },
    {
        id: 'sakura',
        name: '樱花小树',
        tagline: '坚持打卡，枝头渐开',
        stages: ['🫘', '🌱', '🌿', '🌳', '🌸', '🌸', '🌸', '🌸', '🌺', '🏆']
    },
    {
        id: 'ginkgo',
        name: '金秋银杏',
        tagline: '叶色渐变，见证每一天',
        stages: ['🫘', '🌱', '🍃', '🌳', '🍂', '🍂', '🌳', '🍁', '🌟', '🏆']
    }
]

export const TREE_SPECIES_STORAGE_KEY = 'tongji_tree_species_v1'

/** 四项任务全勤时每日最多可领积分（与后端 taskDefs 一致） */
export const DAILY_MAX_TASK_POINTS = 40

export function getTreeSpecies(id) {
    return TREE_SPECIES_LIST.find((s) => s.id === id) || TREE_SPECIES_LIST[0]
}

export function speciesEmojiAtLevel(speciesId, level) {
    const sp = getTreeSpecies(speciesId)
    const lv = Math.min(TREE_MAX_LEVEL, Math.max(0, Number(level) || 0))
    return sp.stages[lv] || sp.stages[0] || '🌱'
}

/** 当前树种成长路线图（供选择面板展示） */
export function speciesGrowthRoadmap(speciesId) {
    const sp = getTreeSpecies(speciesId)
    return TREE_LEVELS.map((meta, i) => {
        const xpTotal = i * TREE_XP_PER_LEVEL
        const daysHint = i === 0
            ? 0
            : Math.max(1, Math.ceil(xpTotal / DAILY_MAX_TASK_POINTS))
        return {
            level: i,
            name: meta.name,
            emoji: sp.stages[i] || meta.emoji,
            desc: meta.desc,
            xpTotal,
            daysHint
        }
    })
}

/** 全勤打卡大约多少天满级 */
export function estimateDaysToMaxLevel() {
    const totalXp = TREE_MAX_LEVEL * TREE_XP_PER_LEVEL
    return Math.max(1, Math.ceil(totalXp / DAILY_MAX_TASK_POINTS))
}