115 lines
4.1 KiB
Swift
115 lines
4.1 KiB
Swift
//
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// IMHelperUtil.swift
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// Crush
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//
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// Created by Leon on 2025/8/31.
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//
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import Foundation
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// MARK: - IMHelperUtil
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class IMHelperUtil{
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static func getAIIdByConversationId(_ conversationId: String?) -> Int?{
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guard let imConversationId = conversationId else{return nil}
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let stings = imConversationId.components(separatedBy: "|")
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guard let last = stings.last else{return nil}
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// let accountId = last
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let strings2 = last.components(separatedBy:"@")
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if let userIdStr = strings2.first {
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if let userid = Int(userIdStr) {
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return userid
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}
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}
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return nil
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}
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}
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// MARK: - IMAudioHelper
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class IMAudioHelper{
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/// 提取用于语音的文本（去除括号内容和 emoji）
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func extractTextForVoice(_ text: String) -> String {
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var result = text
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// 去除括号内容（中英文括号）
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let bracketPattern = #"\(.*?\)|（.*?）"#
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if let regex = try? NSRegularExpression(pattern: bracketPattern, options: []) {
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result = regex.stringByReplacingMatches(in: result, options: [], range: NSRange(location: 0, length: result.utf16.count), withTemplate: "")
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}
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// 去除 emoji
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// 使用 unicode 范围匹配 emoji
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let emojiPattern = "[\\p{Emoji}]"
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if let regex = try? NSRegularExpression(pattern: emojiPattern, options: []) {
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result = regex.stringByReplacingMatches(in: result, options: [], range: NSRange(location: 0, length: result.utf16.count), withTemplate: "")
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}
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return result.trimmingCharacters(in: .whitespacesAndNewlines)
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}
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/// 计算文本的预估音频时长
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/// - Parameters:
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/// - text: 文本内容
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/// - speechRate: 语速设置 (-50 到 50，默认为 0)
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/// - baseWordsPerMinute: 基础语速（每分钟字数），默认为 200
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/// - Returns: 预估的音频时长（秒，TimeInterval）
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func calculateAudioDuration(
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text: String,
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speechRate: Int = 0,
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baseWordsPerMinute: Double = 200.0
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) -> TimeInterval {
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guard !text.isEmpty else { return 0 }
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let voiceText = extractTextForVoice(text)
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guard !voiceText.isEmpty else { return 0 }
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// 中文字符数
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let chineseRegex = try! NSRegularExpression(pattern: "[\\u4e00-\\u9fff]")
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let chineseCharCount = chineseRegex.numberOfMatches(in: voiceText, range: NSRange(location: 0, length: voiceText.utf16.count))
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// 英文单词数（先去掉中文，再按单词匹配）
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let textWithoutChinese = chineseRegex.stringByReplacingMatches(in: voiceText, range: NSRange(location: 0, length: voiceText.utf16.count), withTemplate: " ")
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let wordRegex = try! NSRegularExpression(pattern: "\\b\\w+\\b")
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let englishWordCount = wordRegex.numberOfMatches(in: textWithoutChinese, range: NSRange(location: 0, length: textWithoutChinese.utf16.count))
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let totalWordCount = chineseCharCount + englishWordCount
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if totalWordCount == 0 { return 0 }
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// 根据语速调整基础语速
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let speedMultiplier = 1.0 + (Double(speechRate) / 100.0) // -50 → 0.5, 50 → 1.5
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let adjustedWordsPerMinute = baseWordsPerMinute * speedMultiplier
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// 计算时长（分钟 → 秒）
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let durationInMinutes = Double(totalWordCount) / adjustedWordsPerMinute
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let durationInSeconds = durationInMinutes * 60.0
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return max(0.5, durationInSeconds)
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}
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// /// 格式化音频时长显示
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// /// - Parameter durationInSeconds: 时长（秒）
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// /// - Returns: 格式化的时长字符串，如 "2''" 或 "1'23''"
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// func formatAudioDuration(_ durationInSeconds: Double) -> String {
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// if durationInSeconds < 1 {
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// return "1''"
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// }
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//
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// let totalSeconds = Int(round(durationInSeconds))
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//
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// if totalSeconds < 60 {
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// return "\(totalSeconds)''"
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// }
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//
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// let minutes = totalSeconds / 60
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// let seconds = totalSeconds % 60
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//
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// if seconds == 0 {
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// return "\(minutes)'"
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// }
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//
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// return String(format: "%d'%02d''", minutes, seconds)
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// }
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}
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