97 lines
3.7 KiB
JavaScript
97 lines
3.7 KiB
JavaScript
// 云函数 dogManage — 狗狗 create/update/list，建档与编辑复用
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// 契约见 docs/03-云函数设计.md §2
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const cloud = require('wx-server-sdk');
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cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV });
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const db = cloud.database();
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// 体型档位 → 步幅模型（与 miniprogram/utils/dogStep.js 保持一致，docs/05 R3）
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const BASE_STRIDE = { xs: 0.20, s: 0.25, m: 0.35, l: 0.45, xl: 0.55 }; // 米/步
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const STD_WEIGHT = { xs: 3, s: 7, m: 15, l: 28, xl: 45 }; // 档位标准体重 kg
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// 犬种 → 体型档位；未列出的（中华田园犬/串串/其他）需前端让用户手动选 sizeLevel
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const BREED_SIZE = {
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柯基: 's', 比熊: 'xs', 泰迪: 's', 柴犬: 'm', 金毛: 'l',
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拉布拉多: 'l', 哈士奇: 'l', 边境牧羊犬: 'm', 萨摩耶: 'l', 法斗: 's',
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};
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const resolveSize = (breed, clientSize) => BREED_SIZE[breed] || clientSize || null;
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function computeStride(sizeLevel, weight) {
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const base = BASE_STRIDE[sizeLevel];
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if (!base) return { baseStride: null, stride: null };
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let stride = base;
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if (weight) {
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let f = 1 + (Number(weight) - STD_WEIGHT[sizeLevel]) * 0.005;
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f = Math.max(0.85, Math.min(1.15, f));
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stride = +(base * f).toFixed(3);
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}
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return { baseStride: base, stride };
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}
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// 规范化狗狗字段；返回 { error } 表示校验失败
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function normalize(dog) {
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const sizeLevel = resolveSize(dog.breed, dog.sizeLevel);
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if (!sizeLevel) return { error: '请选择体型档位' }; // 未知犬种必须手动选
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const weight = dog.weight != null ? Number(dog.weight) : null;
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const { baseStride, stride } = computeStride(sizeLevel, weight);
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return {
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data: {
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name: String(dog.name || '').trim(),
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breed: String(dog.breed || '').trim(),
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sizeLevel,
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baseStride,
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stride,
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gender: dog.gender || null,
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ageStage: dog.ageStage || null,
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ageText: dog.ageText || '',
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weight,
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avatar: dog.avatar || '',
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},
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};
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}
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exports.main = async (event, context) => {
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const { OPENID } = cloud.getWXContext();
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const { action, dog } = event;
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const dogsCol = db.collection('dogs');
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// ---- list：列出我的狗 ----
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if (action === 'list') {
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const res = await dogsCol.where({ _openid: OPENID }).orderBy('createdAt', 'asc').get();
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return { ok: true, data: res.data };
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}
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// ---- create：建档 ----
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if (action === 'create') {
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if (!dog || !dog.name || !dog.breed) {
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return { ok: false, code: 'INVALID', msg: '名字和犬种必填' };
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}
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const norm = normalize(dog);
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if (norm.error) return { ok: false, code: 'INVALID', msg: norm.error };
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const now = Date.now();
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const doc = {
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_openid: OPENID,
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...norm.data,
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stats: { totalWalks: 0, totalDistance: 0, totalSteps: 0, currentStreak: 0, lastWalkDate: '' },
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createdAt: now,
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};
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const addRes = await dogsCol.add({ data: doc });
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return { ok: true, data: { _id: addRes._id, ...doc } };
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}
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// ---- update：编辑（校验归属，防越权改他人狗）----
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if (action === 'update') {
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if (!dog || !dog._id) return { ok: false, code: 'INVALID', msg: '缺少狗狗ID' };
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if (!dog.name || !dog.breed) return { ok: false, code: 'INVALID', msg: '名字和犬种必填' };
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const target = await dogsCol.doc(dog._id).get().catch(() => null);
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if (!target || !target.data || target.data._openid !== OPENID) {
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return { ok: false, code: 'FORBIDDEN', msg: '无权操作' };
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}
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const norm = normalize(dog);
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if (norm.error) return { ok: false, code: 'INVALID', msg: norm.error };
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await dogsCol.doc(dog._id).update({ data: norm.data });
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return { ok: true, data: { ...target.data, ...norm.data } };
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}
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return { ok: false, code: 'UNKNOWN_ACTION', msg: '未知操作' };
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};
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