/**
 * Minimal zh/en copy for the sidebar. The plugin renders outside the slot
 * system's locale seat, so it reads the browser language directly (the DSH
 * locale preference and the browser language agree in practice; both default
 * from navigator.language anyway).
 */

const zh = {
  explorer: '资源管理器',
  git: '源代码管理',
  terminal: '终端',
  editor: '编辑器',
  newTab: '新建标签页',
  openExplorer: '资源管理器',
  openGit: 'Git 面板',
  newTerminal: '新终端',
  terminalLimit: '终端数量已达上限 (3)',
  close: '关闭',
  collapse: '折叠侧边栏',
  expand: '展开侧边栏',
  expandFullscreen: '展开为全屏',
  restoreFullscreen: '还原宽度',
  terminalError: '终端连接失败',
  terminalConnectFailed: '终端多次连接失败',
  terminalRetry: '重试',
  preview: '预览',
  edit: '编辑',
  refresh: '刷新',
  save: '保存',
  saved: '已保存',
  unsaved: '未保存',
  saveFailed: '保存失败',
  truncation: '文件过大，仅显示前 512KB',
  binary: '二进制文件，无法预览',
  loading: '加载中…',
  error: '加载失败',
  retry: '重试',
  splitLeft: '向左分栏',
  splitRight: '向右分栏',
  splitUp: '向上分栏',
  splitDown: '向下分栏',
  notRepo: '当前目录不是 git 仓库',
  noChanges: '没有变更',
  stage: '暂存',
  unstage: '取消暂存',
  stageAll: '全部暂存',
  unstageAll: '全部取消暂存',
  commitPlaceholder: '提交信息 (Ctrl+Enter)',
  commit: '提交',
  commitError: '提交失败',
  branch: '分支',
  checkoutError: '切换分支失败',
  history: '历史',
  changes: '变更',
  staged: '已暂存',
  unstaged: '未暂存',
  cancel: '取消',
  diffEmpty: '没有文本差异',
  diffLoadError: '加载差异失败',
  diffBinary: '二进制',
  diffAdded: '新增',
  diffDeleted: '删除',
  diffRenamed: '重命名',
  diffExpand: '展开其余 {count} 行',
  diffCollapse: '收起',
  discard: '放弃更改',
  discardTitle: '放弃更改',
  discardDesc: '将丢弃「{path}」的工作区修改（不可恢复）。',
  viewCommitDiff: '查看提交差异',
  copyShortHash: '复制短哈希',
  copyFullHash: '复制完整哈希',
  copySubject: '复制提交信息',
  revertCommit: '还原此提交',
  revertTitle: '还原此提交',
  revertDesc: '将在当前分支创建一个反转「{subject}」的新提交。',
  cherryPickCommit: '捡取此提交',
  cherryPickTitle: '捡取此提交',
  cherryPickDesc: '将「{subject}」的更改应用到当前分支。',
  timeJustNow: '刚刚',
  timeMinutesAgo: '{n} 分钟前',
  timeHoursAgo: '{n} 小时前',
  timeYesterday: '昨天',
  loadMore: '加载更多',
  historyLoadError: '加载更多历史失败',
  produced: '本次产出',
  producedOpen: '在侧边栏中打开',
  disconnected: '终端连接断开，重连中…',
  exited: '终端进程已退出',
  noSession: '选择一个会话以使用侧边栏',
  pluginNotLoaded: '插件未加载，标签页暂不可用：',
  hiddenFiles: '隐藏文件',
  parent: '上级目录',
  copied: '已复制',
  copy: '复制',
  newFile: '新文件',
  openEditor: '打开编辑器',
  gitDetail: '查看变更详情',
  referenceFile: '@文件',
  copyRelative: '复制相对地址',
  copyAbsolute: '复制绝对地址',
  download: '下载',
  settingsNav: '侧边卡片',
  settingsOpenTitle: '新会话默认打开',
  settingsOpenDesc: '新建会话时自动展开侧边卡片；已存在的会话保持各自布局',
  settingsWidthTitle: '默认宽度占比',
  settingsWidthDesc: '新建会话时侧边卡片占窗口宽度的百分比 (20–60)',
  settingsWidthSuffix: '%',
  settingsSaveFailed: '保存失败',
  settingsConflict: '设置已被其他窗口修改，请重试',
  binaryNoPreview: '此文件类型不支持预览',
  downloadToView: '下载查看',
  officeTooLarge: '文件过大，无法预览',
  officeCorrupt: '文件损坏或格式无效',
  officeEncrypted: '不支持加密文件',
  officeLoadFailed: 'Office 预览组件加载失败',
  previousSlide: '上一页',
  nextSlide: '下一页',
  zoom: '缩放',
  zoomHint: 'Alt + 滚轮',
  settingsSubagentTitle: '检测到子代理时自动展开子代理页面',
  settingsSubagentDesc: '当前会话产生新的子代理时，自动展开侧边栏并打开子代理页面；关闭后需手动打开',
  settingsToolsTitle: '为模型注入终端工具',
  settingsToolsDesc: '开启后，模型可通过 terminal_create 等 8 个工具创建并操作侧边栏终端（默认关闭）',
  settingsTabsTitle: '侧边栏内容',
  settingsViewersTitle: '文件预览',
  settingsViewerCatchAll: '兜底：任意文件',
  viewerImage: '图片',
  viewerPdf: 'PDF',
  viewerDocx: 'Word 文档',
  viewerXlsx: 'Excel 表格',
  viewerPptx: 'PPT 演示',
  viewerMarkdown: 'Markdown',
  viewerCode: '代码',
  viewerBinary: '二进制下载',
  subagent: '子代理',
  openSubagent: '子代理',
  subagentMainAgent: '主代理',
  subagentEmpty: '暂无子代理',
  subagentEmptyDesc: '当前主代理派生的子代理将显示在这里',
  subagentRunning: '运行中',
  subagentInactive: '空闲',
  subagentModeOneShot: '一次性',
  subagentModeContinuable: '可续接',
  subagentCount: '{count} 个子代理',
  subagentCountRunning: '{count} 个子代理 · {running} 运行中',
  subagentDiagCorrupt: '目录损坏',
  subagentDiagUnsupported: '不支持的条目',
  subagentDiagUnavailable: '不可用',
  subagentThinking: '思考中…',
}

const en: Record<keyof typeof zh, string> = {
  explorer: 'Explorer',
  git: 'Source Control',
  terminal: 'Terminal',
  editor: 'Editor',
  newTab: 'New tab',
  openExplorer: 'Explorer',
  openGit: 'Git panel',
  newTerminal: 'New terminal',
  terminalLimit: 'Terminal limit reached (3)',
  close: 'Close',
  collapse: 'Collapse sidebar',
  expand: 'Expand sidebar',
  expandFullscreen: 'Expand to full width',
  restoreFullscreen: 'Restore width',
  terminalError: 'Terminal connection failed',
  terminalConnectFailed: 'Terminal failed to connect repeatedly',
  terminalRetry: 'Retry',
  preview: 'Preview',
  edit: 'Edit',
  refresh: 'Refresh',
  save: 'Save',
  saved: 'Saved',
  unsaved: 'Unsaved',
  saveFailed: 'Save failed',
  truncation: 'File too large — showing the first 512KB',
  binary: 'Binary file, preview unavailable',
  loading: 'Loading…',
  error: 'Failed to load',
  retry: 'Retry',
  splitLeft: 'Split left',
  splitRight: 'Split right',
  splitUp: 'Split up',
  splitDown: 'Split down',
  notRepo: 'This directory is not a git repository',
  noChanges: 'No changes',
  stage: 'Stage',
  unstage: 'Unstage',
  stageAll: 'Stage all',
  unstageAll: 'Unstage all',
  commitPlaceholder: 'Commit message (Ctrl+Enter)',
  commit: 'Commit',
  commitError: 'Commit failed',
  branch: 'Branch',
  checkoutError: 'Branch switch failed',
  history: 'History',
  changes: 'Changes',
  staged: 'Staged',
  unstaged: 'Unstaged',
  cancel: 'Cancel',
  diffEmpty: 'No text changes',
  diffLoadError: 'Failed to load diff',
  diffBinary: 'Binary',
  diffAdded: 'Added',
  diffDeleted: 'Deleted',
  diffRenamed: 'Renamed',
  diffExpand: 'Expand {count} more rows',
  diffCollapse: 'Collapse',
  discard: 'Discard changes',
  discardTitle: 'Discard changes',
  discardDesc: 'This discards the worktree changes of "{path}" (not recoverable).',
  viewCommitDiff: 'View commit diff',
  copyShortHash: 'Copy short hash',
  copyFullHash: 'Copy full hash',
  copySubject: 'Copy subject',
  revertCommit: 'Revert commit',
  revertTitle: 'Revert commit',
  revertDesc: 'Create a new commit on the current branch that reverts "{subject}".',
  cherryPickCommit: 'Cherry-pick commit',
  cherryPickTitle: 'Cherry-pick commit',
  cherryPickDesc: 'Apply the changes of "{subject}" to the current branch.',
  timeJustNow: 'just now',
  timeMinutesAgo: '{n} min ago',
  timeHoursAgo: '{n} h ago',
  timeYesterday: 'yesterday',
  loadMore: 'Load more',
  historyLoadError: 'Failed to load more history',
  produced: 'Produced',
  producedOpen: 'Open in sidebar',
  disconnected: 'Terminal disconnected, reconnecting…',
  exited: 'Terminal process exited',
  noSession: 'Select a conversation to use the sidebar',
  pluginNotLoaded: 'Plugin not loaded; tab unavailable:',
  hiddenFiles: 'Hidden files',
  parent: 'Parent directory',
  copied: 'Copied',
  copy: 'Copy',
  newFile: 'New file',
  openEditor: 'Open editor',
  gitDetail: 'View change details',
  referenceFile: '@file',
  copyRelative: 'Copy relative path',
  copyAbsolute: 'Copy absolute path',
  download: 'Download',
  settingsNav: 'Side card',
  settingsOpenTitle: 'Open by default for new conversations',
  settingsOpenDesc: 'Expand the side card automatically for brand-new conversations; existing conversations keep their own layouts',
  settingsWidthTitle: 'Default width share',
  settingsWidthDesc: 'The side card\'s default share of the window width for new conversations (20–60)',
  settingsWidthSuffix: '%',
  settingsSaveFailed: 'Failed to save',
  settingsConflict: 'The setting changed in another window — please retry',
  binaryNoPreview: 'This file type cannot be previewed',
  downloadToView: 'Download to view',
  officeTooLarge: 'File too large to preview',
  officeCorrupt: 'File is corrupt or in an invalid format',
  officeEncrypted: 'Encrypted files are not supported',
  officeLoadFailed: 'Office preview component failed to load',
  previousSlide: 'Previous',
  nextSlide: 'Next',
  zoom: 'Zoom',
  zoomHint: 'Alt + wheel',
  settingsSubagentTitle: 'Auto-open the Subagent page when a subagent appears',
  settingsSubagentDesc: 'Expand the side card and open the Subagent page when the current conversation spawns a new subagent; turn off to open it manually',
  settingsToolsTitle: 'Inject terminal tools for the model',
  settingsToolsDesc: 'When enabled, the model can create and drive sidebar terminals through the 8 terminal_* tools (off by default)',
  settingsTabsTitle: 'Sidebar content',
  settingsViewersTitle: 'File viewers',
  settingsViewerCatchAll: 'Catch-all: any file',
  viewerImage: 'Image',
  viewerPdf: 'PDF',
  viewerDocx: 'Word',
  viewerXlsx: 'Excel',
  viewerPptx: 'PowerPoint',
  viewerMarkdown: 'Markdown',
  viewerCode: 'Code',
  viewerBinary: 'Binary download',
  subagent: 'Subagents',
  openSubagent: 'Subagents',
  subagentMainAgent: 'Main agent',
  subagentEmpty: 'No subagents',
  subagentEmptyDesc: 'Subagents spawned under the main agent will appear here',
  subagentRunning: 'Running',
  subagentInactive: 'Inactive',
  subagentModeOneShot: 'One-shot',
  subagentModeContinuable: 'Continuable',
  subagentCount: '{count} subagents',
  subagentCountRunning: '{count} subagents · {running} running',
  subagentDiagCorrupt: 'Corrupt',
  subagentDiagUnsupported: 'Unsupported',
  subagentDiagUnavailable: 'Unavailable',
  subagentThinking: 'Thinking…',
}

/** Translate a copy key in the browser's language (zh → zh, else en). */
export type CopyKey = keyof typeof zh

/** Translate a copy key; `{name}` placeholders interpolate from `params`. */
export function t(key: CopyKey, params?: Record<string, string | number>): string {
  const lang = typeof navigator !== 'undefined' ? navigator.language : 'en'
  const dict = lang.toLowerCase().startsWith('zh') ? zh : en
  let text = dict[key]
  if (params !== undefined) {
    for (const [name, value] of Object.entries(params)) {
      text = text.replaceAll(`{${name}}`, String(value))
    }
  }
  return text
}

/** Whether the browser language is Chinese (used for selectors). */
export function isZh(): boolean {
  return typeof navigator !== 'undefined' && navigator.language.toLowerCase().startsWith('zh')
}

/** Format an ISO 8601 author date relative to now (刚刚 / N 分钟前 / N 小时前 / 昨天 / date). */
export function relativeTime(iso: string): string {
  const then = Date.parse(iso)
  if (Number.isNaN(then)) return iso
  const seconds = Math.floor((Date.now() - then) / 1000)
  if (seconds < 60) return t('timeJustNow')
  if (seconds < 3600) return t('timeMinutesAgo', { n: Math.floor(seconds / 60) })
  if (seconds < 86400) return t('timeHoursAgo', { n: Math.floor(seconds / 3600) })
  if (seconds < 172800) return t('timeYesterday')
  const date = new Date(then)
  const pad = (value: number): string => String(value).padStart(2, '0')
  return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())}`
}