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import { MemberLevel } from '../../types';
// ============================================
// TTS服务商成本配置（2026-04-12 更新）
// ============================================
export const TTS_COST_CONFIG = {
// TTS服务商配置
providers: {
// 免费方案（科大讯飞基础版）
iflytek_free: {
name: '科大讯飞-基础版',
costPerThousand: 0, // 免费
quality: 'standard',
voiceOptions: 10,
freeQuota: 100000, // 10万/月（永久）
novelRating: 3 // ★★★☆☆
},
// 性价比方案（百度基础版）
baidu_standard: {
name: '百度智能云-基础版',
costPerThousand: 3.0, // ¥3/千字符
quality: 'standard',
voiceOptions: 20,
freeQuota: 2000000, // 200万/月（首年）
novelRating: 4 // ★★★★☆
},
// 高质量方案（百度精品版）
baidu_premium: {
name: '百度智能云-精品版',
costPerThousand: 15.0, // ¥15/千字符
quality: 'premium',
voiceOptions: 50,
freeQuota: 0,
novelRating: 5 // ★★★★★
},
// 阿里云方案
aliyun_plus: {
name: '阿里云Qwen3-Plus',
costPerThousand: 12.0, // ¥12/千字符
quality: 'high',
voiceOptions: 30,
freeQuota: 0,
novelRating: 5 // ★★★★★
},
// 企业方案（火山引擎）
volcano_premium: {
name: '火山引擎豆包-标准版',
costPerThousand: 50.0, // ¥50/千字符
quality: 'premium',
voiceOptions: 40,
freeQuota: 20000, // 2万/应用
novelRating: 5 // ★★★★★
}
},
// AI模型成本配置
aiModels: {
deepseek: {
name: 'DeepSeek V3.2',
inputCost: 2.0, // ¥2.0/千token
outputCost: 8.0, // ¥8.0/千token
quality: 'standard',
default: true
},
qwen_plus: {
name: '通义Qwen Plus',
inputCost: 4.0, // ¥4.0/千token
outputCost: 12.0, // ¥12.0/千token
quality: 'high'
},
doubao_pro: {
name: '豆包 Pro',
inputCost: 2.0, // ¥2.0/千token
outputCost: 6.0, // ¥6.0/千token
quality: 'high'
}
},
// 各等级默认TTS方案
planTTSProvider: {
0: 'iflytek_free', // 免费版：科大讯飞免费
1: 'baidu_standard', // 入门版：百度基础
2: 'baidu_premium', // 专业版：百度精品
3: 'volcano_premium' // 旗舰版：火山引擎
},
// 默认AI模型
defaultAIModel: 'deepseek'
};
// ============================================
// Token成本配置（AI生成成本 + TTS成本）
// ============================================
export const TOKEN_COST_CONFIG = {
// 基础Token成本（DeepSeek V3.2 + 百度基础TTS）
baseCostPerThousand: 5.0, // AI: ¥2 + TTS: ¥3 = ¥5/千字符
// 超额使用单价
extraPricePerThousand: 6.0, // 略高于成本价
// 模型选择
models: {
deepseek: {
name: 'DeepSeek V3.2',
inputCost: 2.0, // ¥2.0/千token
outputCost: 8.0, // ¥8.0/千token
quality: 'standard',
default: true
},
qwen_plus: {
name: '通义 Qwen Plus',
inputCost: 4.0, // ¥4.0/千token
outputCost: 12.0, // ¥12.0/千token
quality: 'high',
extraFee: 1.5 // 每千token额外收费
},
doubao_pro: {
name: '豆包 Pro',
inputCost: 2.0, // ¥2.0/千token
outputCost: 6.0, // ¥6.0/千token
quality: 'high'
}
}
};
// 计算Token生成成本
export function calculateTokenCost(textLength: number, model: string = 'deepseek'): {
inputCost: number;
outputCost: number;
totalCost: number;
suggestedPrice: number;
} {
const modelConfig = TOKEN_COST_CONFIG.models[model] || TOKEN_COST_CONFIG.models.deepseek;
// 输入成本
const inputTokens = textLength; // 1字 ≈ 1 token
const inputCost = (inputTokens / 1000) * modelConfig.inputCost;
// 输出成本（音频合成）
const outputCost = textLength * 0.001 * modelConfig.outputCost * 0.1;
// 总成本
const totalCost = inputCost + outputCost;
// 建议售价（成本 × 1.5，保证50%利润）
const suggestedPrice = totalCost * 1.5;
return {
inputCost: Math.round(inputCost * 100) / 100,
outputCost: Math.round(outputCost * 100) / 100,
totalCost: Math.round(totalCost * 100) / 100,
suggestedPrice: Math.round(suggestedPrice * 100) / 100
};
}
// 默认套餐配置（包月批发+按量零售，2026-04-12定稿）
export const DEFAULT_PLANS = [
{
name: '免费版',
level: 0,
priceMonthly: 0,
priceYearly: 0,
description: '适合轻度体验',
features: JSON.stringify([
'每月10分钟音频',
'基础音色5种',
'标准音质'
]),
isRecommended: false,
sortOrder: 0,
dailyGenerations: 3,
perGenerationLimit: 10000,
monthlyTokens: 1500,
monthlyMinutes: 10,
yearlyTokens: null,
voiceOptions: 5,
audioQuality: 'standard',
apiAccess: false,
batchProcessing: false,
teamManagement: false,
overageEnabled: false,
overagePrice: 0
},
{
name: '入门版',
level: 1,
priceMonthly: 19,
priceYearly: 190,
description: '适合轻度使用',
features: JSON.stringify([
'每月30分钟音频',
'全部音色',
'高清音质',
'超出¥8/分钟'
]),
isRecommended: false,
sortOrder: 1,
dailyGenerations: 10,
perGenerationLimit: 10000,
monthlyTokens: 4500,
monthlyMinutes: 30,
yearlyTokens: null,
voiceOptions: -1,
audioQuality: 'high',
apiAccess: false,
batchProcessing: false,
teamManagement: false,
overageEnabled: true,
overagePrice: 8.0
},
{
name: '专业版',
level: 2,
priceMonthly: 59,
priceYearly: 590,
description: '适合内容创作者 ⭐推荐',
features: JSON.stringify([
'每月100分钟音频',
'全部音色+定制音色',
'高清音质',
'超出¥7/分钟'
]),
isRecommended: true,
sortOrder: 2,
dailyGenerations: -1,
perGenerationLimit: 10000,
monthlyTokens: 15000,
monthlyMinutes: 100,
yearlyTokens: null,
voiceOptions: -1,
audioQuality: 'high',
apiAccess: false,
batchProcessing: false,
teamManagement: false,
overageEnabled: true,
overagePrice: 7.0
},
{
name: '旗舰版',
level: 3,
priceMonthly: 199,
priceYearly: 1990,
description: '适合重度使用',
features: JSON.stringify([
'每月400分钟音频',
'全部音色+定制音色',
'高清音质',
'VIP优先队列',
'超出¥6/分钟'
]),
isRecommended: false,
sortOrder: 3,
dailyGenerations: -1,
perGenerationLimit: 10000,
monthlyTokens: 60000,
monthlyMinutes: 400,
yearlyTokens: null,
voiceOptions: -1,
audioQuality: 'high',
apiAccess: true,
batchProcessing: false,
teamManagement: false,
overageEnabled: true,
overagePrice: 6.0
},
{
name: '企业版',
level: 4,
priceMonthly: 599,
priceYearly: 5990,
description: '适合企业用户',
features: JSON.stringify([
'每月1500分钟音频',
'全部功能',
'专属技术支持',
'批量处理',
'团队管理',
'超出¥5/分钟'
]),
isRecommended: false,
sortOrder: 4,
dailyGenerations: -1,
perGenerationLimit: 10000,
monthlyTokens: 225000,
monthlyMinutes: 1500,
yearlyTokens: null,
voiceOptions: -1,
audioQuality: 'high',
apiAccess: true,
batchProcessing: true,
teamManagement: true,
overageEnabled: true,
overagePrice: 5.0
}
];
// 初始化套餐数据
export async function initializePlans() {
const existingPlans = await prisma.subscriptionPlan.count();
if (existingPlans === 0) {
console.log('初始化订阅套餐数据...');
for (const plan of DEFAULT_PLANS) {
await prisma.subscriptionPlan.create({ data: plan });
}
console.log('订阅套餐初始化完成');
}
}
// 获取所有套餐列表
export async function getPlans() {
const plans = await prisma.subscriptionPlan.findMany({
where: { isActive: true },
orderBy: { sortOrder: 'asc' }
});
return plans.map(plan => ({
...plan,
priceMonthly: Number(plan.priceMonthly),
priceYearly: Number(plan.priceYearly),
features: JSON.parse(plan.features || '[]')
}));
}
// 获取单个套餐详情
export async function getPlanById(planId: number) {
const plan = await prisma.subscriptionPlan.findUnique({
where: { id: planId }
});
if (!plan) {
throw new Error('套餐不存在');
}
return {
...plan,
priceMonthly: Number(plan.priceMonthly),
priceYearly: Number(plan.priceYearly),
features: JSON.parse(plan.features || '[]')
};
}
// 获取用户当前订阅信息
export async function getUserSubscription(userId: number) {
const subscription = await prisma.subscription.findFirst({
where: {
userId,
status: 'active',
endDate: { gt: new Date() }
},
include: {
plan: true
},
orderBy: { endDate: 'desc' }
});
return subscription;
}
// 获取用户Token余额
export async function getUserTokenBalance(userId: number) {
let balance = await prisma.tokenBalance.findUnique({
where: { userId }
});
if (!balance) {
// 初始化Token余额
balance = await prisma.tokenBalance.create({
data: {
userId,
totalTokens: 10000, // 默认免费额度
usedTokens: 0
}
});
}
const remaining = balance.totalTokens - balance.usedTokens;
return {
totalTokens: balance.totalTokens,
usedTokens: balance.usedTokens,
remainingTokens: remaining,
resetDate: balance.resetDate,
isUnlimited: balance.totalTokens === -1
};
}
// 获取Token使用记录
export async function getTokenUsageList(userId: number, page: number = 1, pageSize: number = 20) {
const where = { userId };
const total = await prisma.tokenUsage.count({ where });
const list = await prisma.tokenUsage.findMany({
where,
orderBy: { createdAt: 'desc' },
skip: (page - 1) * pageSize,
take: pageSize
});
return {
list,
total,
page,
pageSize,
totalPages: Math.ceil(total / pageSize)
};
}
// 消耗Token
export async function consumeToken(
userId: number,
amount: number,
type: string,
contentLength: number,
description?: string
) {
const balance = await prisma.tokenBalance.findUnique({
where: { userId }
});
if (!balance) {
throw new Error('用户Token余额不存在');
}
if (balance.totalTokens !== -1 && balance.usedTokens + amount > balance.totalTokens) {
throw new Error('Token余额不足');
}
// 更新余额
await prisma.tokenBalance.update({
where: { userId },
data: {
usedTokens: { increment: amount }
}
});
// 记录使用
const usage = await prisma.tokenUsage.create({
data: {
userId,
type,
amount,
contentLength,
description
}
});
return usage;
}
// 获取用户配额（兼容旧接口）
export async function getUserQuota(userId: number) {
const user = await prisma.user.findUnique({
where: { id: userId }
});
if (!user) {
throw new Error('用户不存在');
}
const subscription = await getUserSubscription(userId);
const tokenBalance = await getUserTokenBalance(userId);
const memberLevel = user.memberLevel as MemberLevel;
const levelNames = ['免费版', '基础版', '专业版', '旗舰版'];
return {
level: memberLevel,
levelName: levelNames[memberLevel] || '免费版',
isValid: subscription !== null,
expireAt: subscription?.endDate,
plan: subscription?.plan ? {
name: subscription.plan.name,
features: JSON.parse(subscription.plan.features || '[]')
} : null,
tokenBalance,
limits: subscription?.plan ? {
dailyGenerations: subscription.plan.dailyGenerations,
perGenerationLimit: subscription.plan.perGenerationLimit,
monthlyTokens: subscription.plan.monthlyTokens,
voiceOptions: subscription.plan.voiceOptions,
audioQuality: subscription.plan.audioQuality
} : {
dailyGenerations: 3,
perGenerationLimit: 2000,
monthlyTokens: 10000,
voiceOptions: 5,
audioQuality: 'standard'
}
};
}
// 检查用户配额
export async function checkQuota(userId: number, requiredTokens: number) {
const quota = await getUserQuota(userId);
const balance = quota.tokenBalance;
if (balance.isUnlimited) {
return { allowed: true, reason: null };
}
if (balance.remainingTokens < requiredTokens) {
return {
allowed: false,
reason: 'Token余额不足',
required: requiredTokens,
remaining: balance.remainingTokens
};
}
return { allowed: true, reason: null };
}
// ============================================
// 音频时长计费系统（2026-04-12 定稿）
// ============================================
export const AUDIO_BILLING_CONFIG = {
// 成本配置（综合TTS+AI成本）
costPerMinute: 4.0, // 成本：¥4/分钟（AI文本生成+TTS合成）
// 定价策略：包月=批发价，按量=零售价
pricing: {
monthly: 5.0, // 包月批发价：¥5/分钟
overage: 8.0 // 超额零售价：¥8/分钟
},
// 语速配置（字/分钟）
speakingRate: 150,
// 各等级每月音频时长配额（分钟）
monthlyMinutes: {
0: 10, // 免费版：10分钟/月
1: 30, // 入门版：30分钟/月
2: 100, // 专业版：100分钟/月
3: 400, // 旗舰版：400分钟/月
4: 1500 // 企业版：1500分钟/月
},
// 各等级超出配额单价（元/分钟），null=不支持超出
overagePrice: {
0: null, // 免费版：不支持超出
1: 8.0, // 入门版：¥8/分钟
2: 7.0, // 专业版：¥7/分钟
3: 6.0, // 旗舰版：¥6/分钟
4: 5.0 // 企业版：¥5/分钟（最低价）
}
};
// 根据文本长度计算音频时长
export function calculateAudioDuration(textLength: number): number {
return Math.ceil(textLength / AUDIO_BILLING_CONFIG.speakingRate);
}
// 计算音频生成费用（支持包月配额和按量计费）
export function calculateAudioCost(
textLength: number,
memberLevel: number = 0,
usedMinutes: number = 0
): {
textLength: number;
audioMinutes: number;
inQuotaMinutes: number;
overageMinutes: number;
inQuotaPrice: number; // 配额内价格
overagePrice: number; // 超额价格
totalPrice: number;
estimatedCost: number;
} {
const audioMinutes = calculateAudioDuration(textLength);
const monthlyMinutes = AUDIO_BILLING_CONFIG.monthlyMinutes[memberLevel] || 10;
const overagePricePerMinute = AUDIO_BILLING_CONFIG.overagePrice[memberLevel];
// 计算配额内和超额分钟数
const remainingQuota = Math.max(0, monthlyMinutes - usedMinutes);
const inQuotaMinutes = Math.min(audioMinutes, remainingQuota);
const overageMinutes = Math.max(0, audioMinutes - inQuotaMinutes);
// 配额内价格（包月批发价）
const inQuotaPrice = inQuotaMinutes * AUDIO_BILLING_CONFIG.pricing.monthly;
// 超额价格（按量零售价）
const overagePrice = overageMinutes > 0 && overagePricePerMinute !== null
? overageMinutes * overagePricePerMinute
: 0;
const totalPrice = Math.round((inQuotaPrice + overagePrice) * 100) / 100;
return {
textLength,
audioMinutes,
inQuotaMinutes,
overageMinutes,
inQuotaPrice: Math.round(inQuotaPrice * 100) / 100,
overagePrice: Math.round(overagePrice * 100) / 100,
totalPrice,
estimatedCost: audioMinutes * AUDIO_BILLING_CONFIG.costPerMinute
};
}
// 获取用户音频时长余额
export async function getUserAudioBalance(userId: number) {
const user = await prisma.user.findUnique({
where: { id: userId }
});
if (!user) {
throw new Error('用户不存在');
}
const memberLevel = user.memberLevel as MemberLevel;
// 测试账号：memberLevel = -1 表示无限额度
if (memberLevel === -1) {
return { memberLevel: -1, totalMinutes: -1, usedMinutes: 0, remainingMinutes: -1, overageEnabled: false, overagePrice: 0, resetDate: null };
}
const monthlyMinutes = AUDIO_BILLING_CONFIG.monthlyMinutes[memberLevel] || 10;
const overageEnabled = AUDIO_BILLING_CONFIG.overagePrice[memberLevel] !== null;
const overagePrice = AUDIO_BILLING_CONFIG.overagePrice[memberLevel];
// 检查是否需要重置月度配额
const now = new Date();
const resetDate = user.subscriptionResetDate;
let totalMinutes = monthlyMinutes;
let usedMinutes = user.usedAudioMinutes || 0;
// 每月1日重置配额
if (resetDate) {
const lastReset = new Date(resetDate);
if (now.getMonth() !== lastReset.getMonth() || now.getFullYear() !== lastReset.getFullYear()) {
totalMinutes = monthlyMinutes;
usedMinutes = 0;
await prisma.user.update({
where: { id: userId },
data: {
usedAudioMinutes: 0,
subscriptionResetDate: now
}
});
}
}
return {
memberLevel,
totalMinutes,
usedMinutes,
remainingMinutes: totalMinutes - usedMinutes,
overageEnabled,
overagePrice: overagePrice || 0,
resetDate: user.subscriptionResetDate
};
}
// 检查音频生成配额
// 检查音频生成配额（只检查月度总配额，无单次限制）
export async function checkAudioQuota(
userId: number,
textLength: number
) {
const audioMinutes = calculateAudioDuration(textLength);
const balance = await getUserAudioBalance(userId);
// 测试账号：无限额度
if (balance.totalMinutes === -1) {
return { allowed: true, reason: null, audioMinutes, remainingMinutes: -1, totalMinutes: -1 };
}
// 免费版不支持超出配额
if (balance.remainingMinutes < audioMinutes && !balance.overageEnabled) {
return {
allowed: false,
reason: `音频时长不足，本月配额已用完（${balance.totalMinutes}分钟）`,
audioMinutes,
remainingMinutes: balance.remainingMinutes,
totalMinutes: balance.totalMinutes,
overageEnabled: false
};
}
return {
allowed: true,
reason: null,
audioMinutes,
inQuotaMinutes: Math.min(audioMinutes, balance.remainingMinutes),
overageMinutes: Math.max(0, audioMinutes - balance.remainingMinutes),
remainingMinutes: balance.remainingMinutes,
totalMinutes: balance.totalMinutes,
overageEnabled: balance.overageEnabled,
overagePrice: balance.overagePrice
};
}
// 扣除音频时长（生成完成后调用）
export async function consumeAudioMinutes(
userId: number,
textLength: number,
description?: string
) {
const audioMinutes = calculateAudioDuration(textLength);
const balance = await getUserAudioBalance(userId);
const cost = calculateAudioCost(textLength, balance.memberLevel, balance.usedMinutes);
// 更新用户已使用时长
await prisma.user.update({
where: { id: userId },
data: {
usedAudioMinutes: { increment: audioMinutes }
}
});
// 记录使用日志
const usage = await prisma.tokenUsage.create({
data: {
userId,
type: 'audio_generation',
amount: audioMinutes,
contentLength: textLength,
description: description || `${audioMinutes}分钟音频`
}
});
return {
usageId: usage.id,
audioMinutes,
textLength,
inQuotaMinutes: cost.inQuotaMinutes,
overageMinutes: cost.overageMinutes,
inQuotaPrice: cost.inQuotaPrice,
overagePrice: cost.overagePrice,
totalPrice: cost.totalPrice
};
}
// 获取音频生成预估（用于UI展示）
export async function getAudioEstimate(
userId: number,
textLength: number
) {
const balance = await getUserAudioBalance(userId);
const cost = calculateAudioCost(textLength, balance.memberLevel, balance.usedMinutes);
const quota = await checkAudioQuota(userId, textLength);
return {
// 预估信息
textLength,
audioMinutes: cost.audioMinutes,
inQuotaMinutes: cost.inQuotaMinutes,
overageMinutes: cost.overageMinutes,
inQuotaPrice: cost.inQuotaPrice,
overagePricePerMinute: cost.overagePrice,
estimatedPrice: cost.totalPrice,
estimatedCost: cost.estimatedCost,
// 用户配额
remainingMinutes: balance.remainingMinutes,
totalMinutes: balance.totalMinutes,
usedMinutes: balance.usedMinutes,
// 计费策略
overageEnabled: balance.overageEnabled,
overagePrice: balance.overagePrice,
// 是否允许生成
canGenerate: quota.allowed,
reason: quota.reason,
// 显示文本
displayText: quota.allowed
? cost.overageMinutes > 0
? `预计${cost.audioMinutes}分钟（配额${cost.inQuotaMinutes}分钟+超出${cost.overageMinutes}分钟），约¥${cost.totalPrice}`
: `预计${cost.audioMinutes}分钟，约¥${cost.totalPrice}`
: quota.reason
};
}
// ============================================
// 书籍生成配额系统（字数预估 + 过程监控 + 中断保存）
// ============================================
import { estimateBookWords as estimateBookWordsFromConfig, getBookTypeConfig as getBookTypeConfigFromNew } from '../book-generator/book-type-config';
// 根据书籍规模计算预估字数（使用统一配置）
export function estimateBookWords(bookScale: string): { min: number; max: number; avg: number } {
return estimateBookWordsFromConfig(bookScale);
}
// 根据预估字数计算预估音频时长
export function estimateAudioMinutesFromWords(wordCount: number): number {
return Math.ceil(wordCount / AUDIO_BILLING_CONFIG.speakingRate);
}
// 检查书籍生成的配额（生成前预估）
export async function checkBookGenerationQuota(
userId: number,
bookScale: string
): Promise<{
allowed: boolean;
reason: string | null;
// 预估信息
estimatedWords: { min: number; max: number; avg: number };
estimatedAudioMinutes: { min: number; max: number; avg: number };
// 配额信息
quota: {
totalMinutes: number;
usedMinutes: number;
remainingMinutes: number;
overageEnabled: boolean;
overagePrice: number;
};
// 费用预估
costEstimate: {
inQuotaMinutes: number;
overageMinutes: number;
estimatedPrice: number;
displayText: string;
};
}> {
const wordEstimate = estimateBookWords(bookScale);
const audioMinutes = estimateAudioMinutesFromWords(wordEstimate.avg);
const balance = await getUserAudioBalance(userId);
// 免费版且预估超出配额
if (!balance.overageEnabled && balance.remainingMinutes < audioMinutes) {
return {
allowed: false,
reason: `免费版不支持超出配额，请升级套餐或减少书籍规模`,
estimatedWords: wordEstimate,
estimatedAudioMinutes: {
min: estimateAudioMinutesFromWords(wordEstimate.min),
max: estimateAudioMinutesFromWords(wordEstimate.max),
avg: audioMinutes
},
quota: {
totalMinutes: balance.totalMinutes,
usedMinutes: balance.usedMinutes,
remainingMinutes: balance.remainingMinutes,
overageEnabled: balance.overageEnabled,
overagePrice: balance.overagePrice
},
costEstimate: {
inQuotaMinutes: balance.remainingMinutes,
overageMinutes: 0,
estimatedPrice: 0,
displayText: `预估需要${audioMinutes}分钟，超出您的配额${balance.remainingMinutes}分钟`
}
};
}
// 计算费用
const inQuotaMinutes = Math.min(audioMinutes, balance.remainingMinutes);
const overageMinutes = Math.max(0, audioMinutes - balance.remainingMinutes);
const estimatedPrice = overageMinutes > 0 && balance.overagePrice
? overageMinutes * balance.overagePrice
: 0;
return {
allowed: true,
reason: null,
estimatedWords: wordEstimate,
estimatedAudioMinutes: {
min: estimateAudioMinutesFromWords(wordEstimate.min),
max: estimateAudioMinutesFromWords(wordEstimate.max),
avg: audioMinutes
},
quota: {
totalMinutes: balance.totalMinutes,
usedMinutes: balance.usedMinutes,
remainingMinutes: balance.remainingMinutes,
overageEnabled: balance.overageEnabled,
overagePrice: balance.overagePrice
},
costEstimate: {
inQuotaMinutes,
overageMinutes,
estimatedPrice: Math.round(estimatedPrice * 100) / 100,
displayText: overageMinutes > 0
? `预估${audioMinutes}分钟（配额${inQuotaMinutes}分钟+超出${overageMinutes}分钟），预计额外费用¥${estimatedPrice}`
: `预估${audioMinutes}分钟，配额内免费`
}
};
}
// 检查当前额度是否足够生成指定字数（用于生成过程监控）
export async function checkQuotaForWords(userId: number, wordCount: number): Promise<{
sufficient: boolean;
reason: string | null;
currentWords: number;
maxAllowedWords: number;
audioMinutesNeeded: number;
remainingMinutes: number;
}> {
const audioMinutesNeeded = estimateAudioMinutesFromWords(wordCount);
const balance = await getUserAudioBalance(userId);
if (!balance.overageEnabled && balance.remainingMinutes < audioMinutesNeeded) {
return {
sufficient: false,
reason: `额度不足：需要${audioMinutesNeeded}分钟，您剩余${balance.remainingMinutes}分钟`,
currentWords: wordCount,
maxAllowedWords: balance.remainingMinutes * AUDIO_BILLING_CONFIG.speakingRate,
audioMinutesNeeded,
remainingMinutes: balance.remainingMinutes
};
}
return {
sufficient: true,
reason: null,
currentWords: wordCount,
maxAllowedWords: balance.remainingMinutes * AUDIO_BILLING_CONFIG.speakingRate,
audioMinutesNeeded,
remainingMinutes: balance.remainingMinutes
};
}
// 获取当前用户已生成的字数（用于断点续传）
export async function getGeneratedWordCount(bookId: string): Promise<number> {
const book = await prisma.book.findUnique({
where: { id: parseInt(bookId) },
include: { chapters: true }
});
if (!book) return 0;
// 统计已完成章节的字数（genStage 含内容/音频/视频阶段都算已完成）
const completedGenStages = ['content_completed', 'audio_completed', 'audio_generating', 'video_generating', 'video_completed'];
const completedWords = book.chapters
.filter(c => completedGenStages.includes(c.genStage))
.reduce((sum, c) => sum + (c.wordCount || 0), 0);
return completedWords;
}
// 记录生成中断状态（用于断点续传）
export async function markGenerationInterrupted(bookId: string, lastChapterNumber: number, currentWords: number): Promise<void> {
await prisma.book.update({
where: { id: parseInt(bookId) },
data: {
genStage: 'failed',
failedStage: 'content_generating',
errorMsg: `额度不足中断，已生成${currentWords}字`,
progress: 0 // 重置进度，下次生成时重新计算
}
});
console.log(`[QuotaCheck] 书籍${bookId}生成中断：已完成${currentWords}字，最后章节${lastChapterNumber}`);
}
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