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MEIZU-Battery-Healthy/lib/logic/capacity_extractor.dart
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/// 容量提取工具
/// 支持两种日志格式:
/// 1. learned_cap21 系列):单位 µAh,除以 1000 得到 mAh
/// 🟢 优先级最高,不受 status 限制(BMS 可能在任意状态行更新此值)
/// 2. remaining_cap20 系列):仅从 status=Full 行提取,单位智能识别(µAh/mAh)
class CapacityExtractor {
static int? extractCapacity(List<String> lines) {
final validLines = lines.where((line) => line.contains('tbat=')).toList();
if (validLines.isEmpty) return null;
// ============================================================
// 🟢 第一优先级:learned_cap21 系列专属)
// 不限制 status,在所有有效行中搜索,取最新的一条
// ============================================================
final learnedReg = RegExp(r'learned_cap=(\d+)');
for (String line in validLines.reversed) {
final match = learnedReg.firstMatch(line);
if (match != null) {
final value = int.parse(match.group(1)!);
// learned_cap 单位固定为 µAh,直接除以 1000 转 mAh
return value ~/ 1000;
}
}
// ============================================================
// 🟢 第二优先级:remaining_cap20 系列回退方案)
// 仅从 status=Full 行提取(充满状态下 BMS 最准确)
// ============================================================
final fullLines = validLines
.where((line) => line.contains('status=Full'))
.toList();
if (fullLines.isEmpty) return null;
final remainingReg = RegExp(r'remaining_cap=(\d+)');
int? maxRemaining;
for (String line in fullLines) {
final match = remainingReg.firstMatch(line);
if (match != null) {
final value = int.parse(match.group(1)!);
if (maxRemaining == null || value > maxRemaining) {
maxRemaining = value;
}
}
}
if (maxRemaining == null) return null;
// 🟢 智能单位识别:如果数值大于 100000(约 100 mAh),视为 µAh 需除以 1000
if (maxRemaining > 100000) {
return maxRemaining ~/ 1000;
} else {
return maxRemaining;
}
}
}