export const SUPPORTED_UI_LANGUAGES = ["zh-CN", "en"] as const;

export type UiLanguage = (typeof SUPPORTED_UI_LANGUAGES)[number];

export const DEFAULT_UI_LANGUAGE: UiLanguage = "zh-CN";

const ENGLISH_MESSAGES = {
	"语言 / Language": "Language",
	"简体中文": "Simplified Chinese",
	"English": "English",
	"语言已切换为 {language}": "Language switched to {language}",
	"语言设置保存失败：{error}": "Failed to save language setting: {error}",
	"读取语言设置失败，已使用简体中文：{error}": "Failed to load the language setting; using Simplified Chinese: {error}",
	"语言设置根节点必须是对象": "The language settings root must be an object",
	"不支持的语言设置版本：{version}": "Unsupported language settings version: {version}",
	"不支持的界面语言：{language}": "Unsupported interface language: {language}",

	"过滤：": "Filter: ",
	"搜索：": "Search: ",
	"<输入关键词>": "<type keywords>",
	"保留过滤": "Keep filter",
	"清空搜索": "Clear search",
	"继续输入": "Continue typing",
	"清空过滤": "Clear filter",
	"搜索": "Search",
	"无匹配项：{query}": "No matches: {query}",
	"暂无条目": "No entries",
	"← 当前": "← current",
	"移动": "Move",
	"选择": "Select",
	"返回": "Back",
	"进入": "Open",
	"编辑": "Edit",
	"退出": "Exit",
	"切换选项": "Toggle",
	"保存并同步": "Save & sync",
	"保存并启用": "Save & enable",

	"<未填写>": "<not set>",
	"<必填>": "<required>",
	"<空>": "<empty>",
	"<无模型>": "<no models>",
	"<未选择>": "<not selected>",
	"<未配置>": "<not configured>",
	"默认": "Default",
	"开启": "On",
	"关闭": "Off",
	"关闭时不使用": "Not used while off",
	"自动推荐": "Recommended",
	"不添加": "Disabled",
	"自定义请求头": "Custom headers",
	"内联自定义请求头（{count}项）": "Inline custom headers ({count})",
	"自定义:{id} — {name}": "Custom: {id} — {name}",
	"自定义请求头（未选择）": "Custom headers (not selected)",
	"自定义请求头缺失：{id}": "Missing custom header profile: {id}",

	"接入": "Provider",
	"模型": "Models",
	"请求头": "Headers",
	"代理": "Proxy",
	"认证": "Auth",
	"状态": "Status",
	"模型 ID": "Model ID",
	"显示名": "Display name",
	"输入": "Input",
	"上下文": "Context",
	"输出": "Output",
	"文本": "Text",
	"文本,视觉": "Text,Vision",
	"开": "On",
	"关": "Off",
	"API 协议": "API protocol",
	"接入 ID（必填）": "Provider ID (required)",
	"名称": "Name",
	"本机代理": "Local proxy",
	"代理地址": "Proxy URL",
	"认证头": "Auth header",
	"接入 ID 必填，且不能与已有或 pi 内置接入重复": "Provider ID is required and must not duplicate an existing or built-in Pi provider",
	"Ctrl+S 保存并同步 models.json；不切换当前会话模型": "Ctrl+S saves and syncs models.json without switching the current session model",
	"选择 API 协议": "Select API protocol",
	"认证头（API key 放在哪里）": "Auth header (where the API key is sent)",
	"默认 — 交给协议 SDK / 接入默认行为": "Default — use the protocol SDK/provider behavior",
	"Bearer — 强制 Authorization: Bearer <apiKey>": "Bearer — force Authorization: Bearer <apiKey>",
	"本机代理（仅当前接入点）": "Local proxy (this provider only)",
	"关闭 — 请求直连上游": "Off — connect directly to upstream",
	"开启 — 通过 {url}": "On — route through {url}",
	"接入 ID（必填，最多 48 个字符；仅字母、数字、点、下划线和连字符；当前：{current}）": "Provider ID (required, max 48 characters; letters, digits, dots, underscores, and hyphens only; current: {current})",
	"名称（显示用，可留空；当前：{current}）": "Name (optional display label; current: {current})",
	"代理地址（http/https；当前：{current}，留空保持原值）": "Proxy URL (http/https; current: {current}; leave blank to keep it)",
	"API key（可选；明文 / $ENV_VAR / !command；当前：{current}，留空清除）": "API key (optional; literal / $ENV_VAR / !command; current: {current}; leave blank to clear)",
	"Base URL（http/https）（当前：{current}，留空保持原值）": "Base URL (http/https; current: {current}; leave blank to keep it)",

	"重新拉取": "Refresh list",
	"上游模型列表": "Upstream model list",
	"显示名称": "Display name",
	"默认 = 模型 ID": "Default = model ID",
	"视觉支持": "Vision input",
	"上下文窗口": "Context window",
	"最大输出": "Max output",
	"开启 · 新版协议": "On · current protocol",
	"关闭 · Legacy": "Off · Legacy",
	"开启 · priority": "On · priority",
	"正在拉取模型列表，总计最多 10 秒…": "Fetching the model list (10 seconds maximum)…",
	"拉取失败：{error}": "Fetch failed: {error}",
	"手动输入模型 ID（当前：{current}）": "Enter a model ID manually (current: {current})",
	"上游返回空列表": "Upstream returned an empty list",
	"选择模型 ID（共 {count} 个）": "Select a model ID ({count} available)",
	"{label}（当前：{current}，留空保持原值）": "{label} (current: {current}; leave blank to keep it)",
	"{label} 必须是正整数": "{label} must be a positive integer",
	"模型 ID（当前：{current}，传给上游 API 的模型字段）": "Model ID (current: {current}; sent as the upstream API model field)",
	"显示名称（当前：{current}，可空默认用模型 ID；输入空格清空）": "Display name (current: {current}; blank uses the model ID; enter a space to clear)",
	"关闭 — 仅文本输入": "Off — text input only",
	"开启 — 文本 + 图片输入": "On — text and image input",
	"关闭 — 不发送模型推理参数": "Off — do not send reasoning parameters",
	"开启 — 启用模型推理参数": "On — enable reasoning parameters",
	"开启：新版模型，发送 thinking.type=adaptive 和 output_config.effort": "On: current models; send thinking.type=adaptive and output_config.effort",
	"关闭：旧版接口，发送 thinking.type=enabled 和 budget_tokens": "Off: legacy API; send thinking.type=enabled and budget_tokens",
	"关闭 — 不发送 service_tier（默认）": "Off — do not send service_tier (default)",
	"开启 — service_tier=priority，可能消耗 Fast / priority 额度": "On — service_tier=priority; may consume Fast/priority quota",
	"接入 {providerId} · API {api}": "Provider {providerId} · API {api}",
	"Ctrl+S 保存并启用模型；不切换当前会话模型": "Ctrl+S saves and enables the model without switching the current session model",

	"页码 0 / 0": "Page 0 / 0",
	"页码 {page} / {pages}": "Page {page} / {pages}",
	"搜索: ": "Search: ",
	"<直接输入搜索>": "<type to search>",
	"匹配 {matched} / {total} · {page}": "Matches {matched} / {total} · {page}",
	"没有匹配模型；Backspace 删除搜索词，Esc 返回后可手动输入。": "No matching models. Use Backspace to edit the search, or Esc to enter an ID manually.",
	"  ← 当前": "  ← current",
	"↑↓ 选择 · ←→/PgUp/PgDn 翻页 · 输入搜索 · Backspace 删除 · Enter 确认 · Esc 取消": "↑↓ select · ←→/PgUp/PgDn page · type to search · Backspace delete · Enter confirm · Esc cancel",

	"OpenAI Responses · 标准 instructions/input wire": "OpenAI Responses · standard instructions/input wire",
	"OpenAI Chat · 传统 chat/completions 兼容": "OpenAI Chat · legacy chat/completions compatibility",
	"Anthropic Messages · Claude / Claude Code 兼容": "Anthropic Messages · Claude / Claude Code compatibility",
	"Google Gemini · Gemini 原生 API": "Google Gemini · native Gemini API",

	"请确认改动": "Confirm changes",
	"{warnings}\n\n继续保存？": "{warnings}\n\nContinue saving?",
	"{title}：\n{errors}": "{title}:\n{errors}",
	"接入配置无效": "Invalid provider configuration",
	"模型配置无效": "Invalid model configuration",
	"保存失败：{error}": "Save failed: {error}",
	"删除失败：{error}": "Delete failed: {error}",
	"删除接入 {providerId}": "Delete provider {providerId}",
	"将删除 {name} 下全部 {count} 个模型。": "Delete {name} and all of its models ({count}).",
	"删除模型 {fullId}": "Delete model {fullId}",
	"这是该接入下最后一个模型；删除后接入也会从 models.json 中移除。": "This is the provider's last model; deleting it will also remove the provider from models.json.",
	"只删除该模型，接入保留。": "Delete only this model and keep the provider.",
	"模型不存在：{fullId}": "Model not found: {fullId}",
	"编辑模型 {fullId}": "Edit model {fullId}",
	"接入配置已不存在：{providerId}": "Provider configuration no longer exists: {providerId}",
	"编辑模型": "Edit model",
	"添加模型": "Add model",
	"编辑接入": "Edit provider",
	"删除模型": "Delete model",
	"暂无模型；按 a 添加第一个模型": "No models. Press A to add the first model.",
	"添加模型到 {providerId}": "Add model to {providerId}",
	"编辑接入 {providerId}": "Edit provider {providerId}",
	"没有可删除的模型；删除接入请返回上一级按 d。": "There are no models to delete. Return to the previous menu and press D to delete the provider.",
	"新建接入配置": "New provider configuration",
	"请继续添加第一个模型；取消模型编辑则不会创建该接入。": "Add the first model next. Cancelling the model editor will leave the provider uncreated.",
	"新建接入": "New provider",
	"删除接入": "Delete provider",
	"{providers} 接入 · {models} 模型 · {captures} 内置抓包 · {profiles} 自定义请求头": "Providers: {providers} · Models: {models} · Built-in captures: {captures} · Custom headers: {profiles}",
	"请求头管理": "Headers",
	"暂无自定义接入；按 n 新建": "No custom providers. Press N to create one.",
	"没有可删除的接入。": "There are no providers to delete.",

	"OpenAI 兼容端点使用的终端 Codex TUI 请求头。": "Terminal Codex TUI headers for OpenAI-compatible endpoints.",
	"Anthropic 兼容端点常用的 ClaudeCode 请求头。": "Common ClaudeCode headers for Anthropic-compatible endpoints.",
	"清空": "Clear",
	"清空当前请求头，重新手动填写。": "Clear the current headers and enter them manually.",
	"未抓包": "Not captured",
	"已抓包 {time} · {count} headers": "Captured {time} · {count} headers",
	"自定义 ID": "Custom ID",
	"请求头 ID": "Header ID",
	"请求头名称": "Header name",
	"快速模板": "Quick template",
	"选择后填充": "Select to populate",
	"请求头 JSON": "Header JSON",
	"{count}项": "{count} entries",
	"未配置": "Not configured",
	"请求头无效：\n{errors}": "Invalid headers:\n{errors}",
	"结构：JSON 对象；key 是客户端 header 名，value 是字符串。复杂示例请用“快速模板”。": "Format: a JSON object whose keys are client header names and values are strings. Use Quick template for complete examples.",
	"请求头 JSON 无效：{error}": "Invalid header JSON: {error}",
	"选择请求头模板": "Select a header template",
	"已清空请求头": "Headers cleared",
	"已填充模板：{template}，可继续进入“请求头 JSON”微调。": "Template applied: {template}. Open Header JSON to customize it.",
	"请求头 ID（接入引用这个 ID；字母/数字/._-）": "Header ID (referenced by providers; letters/digits/._-)",
	"请求头名称（显示用）": "Header name (display only)",
	"认证类敏感 header 会被拒绝；API key 请放在接入配置中": "Sensitive authentication headers are rejected; configure the API key on the provider instead",
	"请求头不存在：{profileId}": "Header profile not found: {profileId}",
	"删除请求头 {profileId}": "Delete header profile {profileId}",
	"将删除 {name}。{affected}": "Delete {name}.{affected}",
	"\n{count} 个模型会自动改回“自动推荐”。": "\nAffected models ({count}) will automatically revert to Recommended.",
	"编辑请求头 {profileId}": "Edit header profile {profileId}",
	"/model-manager / 请求头": "/model-manager / Headers",
	"编辑请求头": "Edit headers",
	"新建自定义": "New custom profile",
	"删除": "Delete",
	"暂无自定义请求头；按 n 新建": "No custom header profiles. Press N to create one.",
	"新建请求头": "New header profile",
	"没有可删除的请求头。": "There are no header profiles to delete.",

	"模型接入与请求配置 / Model and provider settings": "Model and provider settings / 模型接入与请求配置",
	"/model-manager 需要 TUI 交互模式": "/model-manager requires interactive TUI mode",

	"可先返回上一级选择“快速模板”，也可在这里填写：": "Return to Quick template first, or enter headers here:",

	"恢复未完成配置事务失败：{error}（为避免读取半完成配置，本次暂不注册模型）": "Failed to recover an incomplete configuration transaction: {error} (models will not be registered this time to avoid reading a partially written configuration)",
	"读取 models.json/state.json 失败：{error}（本次启动仅使用内存空配置，不覆盖原文件）": "Failed to read models.json/state.json: {error} (this startup will use an empty in-memory configuration without overwriting the files)",
	"注册模型目录失败：{warning}": "Failed to register the model catalog: {warning}",
	"读取/注册模型配置失败：{error}": "Failed to read/register the model configuration: {error}",
	"激活模型接入失败：{warning}": "Failed to activate a model provider: {warning}",
	"恢复、读取或激活模型配置失败：{error}": "Failed to recover, read, or activate the model configuration: {error}",
	"[pi-model-manager] 已补全 {count} 个接入的请求地址（{providerIds}），现在 models.json 存的就是实际请求根地址": "[pi-model-manager] Normalized request URLs for {count} provider(s) ({providerIds}); models.json now contains the actual request root URLs",

	"{label} JSON 必须是对象": "{label} JSON must be an object",
	"{label} {key} 的值必须是字符串": "The value of {label} {key} must be a string",
	"写入 {targetPath} 失败：{error}": "Failed to write {targetPath}: {error}",
	"写入 {targetPath} 失败；完整内容已保留在临时文件：{tempPath}：{error}": "Failed to write {targetPath}; the complete content remains in temporary file {tempPath}: {error}",
	"另一个 Pi 进程正在保存模型配置；无法在限定时间内获取锁：{path}": "Another Pi process is saving the model configuration; the lock could not be acquired in time: {path}",
	"配置锁所有权在释放前发生变化，已保留锁文件供检查：{path}": "The configuration lock ownership changed before release; the lock file was retained for inspection: {path}",
	"{path} 必须是对象": "{path} must be an object",
	"{path}.oldSource 必须是字符串或 null": "{path}.oldSource must be a string or null",
	"{path} 缺少有效内容或签名": "{path} is missing valid content or a signature",
	"{path} 内容签名校验失败": "Content signature verification failed for {path}",
	"事务意图文件格式无效": "The transaction intent file is invalid",
	"{path} 的当前内容既不是事务旧版本，也不是目标版本；已保留 {transactionPath}，不会覆盖外部修改。": "The current content of {path} matches neither the old nor target transaction version; {transactionPath} was retained and external changes will not be overwritten.",
	"{path} 写入后内容签名不匹配；已保留 {transactionPath} 供恢复。": "The content signature of {path} did not match after writing; {transactionPath} was retained for recovery.",
	"无法解析未完成事务 {transactionPath}：{error}": "Failed to parse incomplete transaction {transactionPath}: {error}",
	"{path} 已被其它进程或编辑器修改；已取消本次保存，请重新打开 /model-manager 后重试。": "{path} was modified by another process or editor; the save was cancelled. Reopen /model-manager and try again.",
	"配置事务未完成：{error}。下次启动或保存会尝试恢复。": "The configuration transaction did not complete: {error}. Recovery will be attempted on the next startup or save.",
	"models.json/state.json 未完整保存：{error}": "models.json/state.json were not fully saved: {error}",
	"models.json/state.json 已写入，但当前会话 registry 重载失败：{error}。可执行 /reload 重试。": "models.json/state.json were written, but the current session registry failed to reload: {error}. Run /reload to retry.",
	"{path} 在读取期间持续变化；请停止其它写入后重试。": "{path} kept changing while being read; stop other writers and try again.",

	"{successMessage}，但以下接入未能刷新，已保留上一版 runtime：\n- {warnings}": "{successMessage}, but the following providers could not be refreshed and retain their previous runtime:\n- {warnings}",
	"已保存请求头 {profileId}": "Saved header profile {profileId}",
	"已删除请求头 {profileId}": "Deleted header profile {profileId}",
	"代理地址无效：{url}": "Invalid proxy URL: {url}",
	"代理地址目前只支持 http:// 或 https:// 代理": "Only http:// or https:// proxies are currently supported",
	"代理请求失败：{code}": "Proxy request failed: {code}",
	"无错误消息": "no error message",
	"未知代理错误": "Unknown proxy error",
	"不支持的上游协议：{protocol}": "Unsupported upstream protocol: {protocol}",
	"本地代理服务正在关闭，请稍后重试": "The local proxy service is shutting down; try again shortly",
	"本地代理转发服务监听地址异常": "The local proxy forwarding service returned an invalid listen address",

	"内置接入 {providerId} 不允许通过 /model-manager 编辑或删除。": "Built-in provider {providerId} cannot be edited or deleted through /model-manager.",
	"当前未限制 enabledModels，重启后默认可选": "enabledModels is unrestricted; the model will be available by default after restart",
	"已写入项目 enabledModels": "Written to project enabledModels",
	"已写入全局 enabledModels": "Written to global enabledModels",
	"已在 enabledModels 中": "Already present in enabledModels",
	"已保存并启用模型": "Saved and enabled model",
	"已创建并启用模型": "Created and enabled model",
	"{messagePrefix} {fullId}（{availability}）": "{messagePrefix} {fullId} ({availability})",
	"已保存模型 {fullId}，但启用校验有警告：\n- {warnings}": "Saved model {fullId}, but availability verification reported warnings:\n- {warnings}",
	"已保存模型 {fullId}，但启用同步/校验失败：{error}": "Saved model {fullId}, but availability synchronization/verification failed: {error}",
	"models.json/state.json 已保存，但当前会话接入刷新失败：{error}。可执行 /reload 重试。": "models.json/state.json were saved, but the current session provider refresh failed: {error}. Run /reload to retry.",
	"已保存接入 {providerId}": "Saved provider {providerId}",
	"已同步项目 enabledModels 中的接入重命名": "Synchronized the provider rename in project enabledModels",
	"已同步全局 enabledModels 中的接入重命名": "Synchronized the provider rename in global enabledModels",
	"接入已保存，但 enabledModels 同步失败：{error}": "The provider was saved, but enabledModels synchronization failed: {error}",
	"接入 {oldProviderId} 已重命名为 {providerId}": "Provider {oldProviderId} was renamed to {providerId}",
	"模型 {oldFullId} 已重命名为 {newFullId}": "Model {oldFullId} was renamed to {newFullId}",
	"接入已删除，但 enabledModels 清理失败：{error}": "The provider was deleted, but enabledModels cleanup failed: {error}",
	"已删除接入 {providerId}": "Deleted provider {providerId}",
	"接入 {providerId} 已删除": "Provider {providerId} was deleted",
	"模型已删除，但 enabledModels 清理失败：{error}": "The model was deleted, but enabledModels cleanup failed: {error}",
	"已删除模型 {fullId}": "Deleted model {fullId}",
	"模型 {fullId} 已删除": "Model {fullId} was deleted",

	"models.json 根节点必须是对象": "The models.json root must be an object",
	"models.json 中不存在待重命名接入：{providerId}": "Provider to rename was not found in models.json: {providerId}",
	"models.json 中已存在接入：{providerId}": "Provider already exists in models.json: {providerId}",
	"models.json 中不存在接入：{providerId}": "Provider was not found in models.json: {providerId}",
	"models.json 中不存在待重命名模型：{fullId}": "Model to rename was not found in models.json: {fullId}",
	"models.json 中已存在模型：{fullId}": "Model already exists in models.json: {fullId}",
	"接入不存在：{providerId}": "Provider not found: {providerId}",
	"{path} 根节点必须是对象": "The root of {path} must be an object",
	"{path} 已被未遵守 Pi 文件锁的编辑器修改；已取消 enabledModels 同步，请重试。": "{path} was modified by an editor that did not honor Pi's file lock; enabledModels synchronization was cancelled. Try again.",
	"{label} 未找到模型 {fullId}": "{label} could not find model {fullId}",
	"{label} 找到模型 {fullId}，但 API key 未配置或不可解析": "{label} found model {fullId}, but its API key is missing or cannot be resolved",
	"{label} 请求认证解析失败：{error}": "{label} failed to resolve request authentication: {error}",
	"当前会话 registry": "Current session registry",
	"原生 models.json registry": "Native models.json registry",
	"原生 models.json registry 校验失败：{error}": "Native models.json registry verification failed: {error}",

	"；恢复上一版 runtime 也失败：{error}": "; restoring the previous runtime also failed: {error}",
	"；已恢复上一版 runtime": "; restored the previous runtime",
	"；新配置未注册到当前 runtime": "; the new configuration was not registered in the current runtime",
	"ClaudeCode metadata 注入失败，本次请求仅使用请求头": "ClaudeCode metadata injection failed; this request will use headers only",
	"OpenAI Responses instructions 标准化失败，本次请求使用原始 payload": "OpenAI Responses instruction normalization failed; this request will use the original payload",
	"Fast mode 状态读取失败，本次请求未注入 service_tier": "Failed to read Fast mode state; service_tier was not injected for this request",
	"{reason}，已切换到 {fullId}": "{reason}; switched to {fullId}",
	"{reason}，已自动切换到 {fullId}": "{reason}; automatically switched to {fullId}",
	"{reason}，但当前没有其它可用模型。请使用 /model-manager 添加模型或 /login 配置认证。": "{reason}, but no other model is currently available. Use /model-manager to add a model or /login to configure authentication.",

	"{label} 必须使用 http 或 https": "{label} must use http or https",
	"{label} 不是有效 URL": "{label} is not a valid URL",
	"代理地址必须包含主机名": "The proxy URL must include a hostname",
	"代理地址不是有效 URL": "The proxy URL is invalid",
	"接入 ID 不能为空": "Provider ID must not be empty",
	"接入 ID 只能包含字母、数字、点、下划线和连字符": "Provider ID may contain only letters, digits, dots, underscores, and hyphens",
	"接入 ID 最多 {count} 个字符": "Provider ID must be at most {count} characters",
	"接入 ID 已存在：{id}": "Provider ID already exists: {id}",
	"接入 ID 与 pi 内置接入冲突：{id}（请改用其它 ID）": "Provider ID conflicts with a built-in Pi provider: {id} (use a different ID)",
	"Base URL 不能为空": "Base URL must not be empty",
	"请选择一个自定义请求头": "Select a custom header profile",
	"自定义请求头不存在：{profileId}": "Custom header profile not found: {profileId}",
	"模型 ID 不能为空": "Model ID must not be empty",
	"接入配置不存在：{providerId}": "Provider configuration not found: {providerId}",
	"上下文窗口必须是正整数": "Context window must be a positive integer",
	"最大输出必须是正整数": "Max output must be a positive integer",
	"模型已存在：{modelId}": "Model already exists: {modelId}",
	"将修改接入级配置：{changes}，会影响该接入下 {count} 个模型。": "Provider-level settings will change ({changes}), affecting {count} model(s) under this provider.",
	"请求头 ID 不能为空": "Header profile ID must not be empty",
	"请求头 ID 只能包含字母、数字、点、下划线和连字符": "Header profile ID may contain only letters, digits, dots, underscores, and hyphens",
	"请求头 ID 是插件内置保留名：{profileId}": "Header profile ID is reserved by the plugin: {profileId}",
	"请求头 ID 已存在：{profileId}": "Header profile ID already exists: {profileId}",
	"请求头名称不能为空": "Header profile name must not be empty",
	"请求头至少需要 1 项": "At least one header is required",
	"请求头包含会明文落盘的敏感字段：{headers}（请改用 provider API key / 环境变量 / !command）": "Headers contain sensitive fields that would be stored in plaintext: {headers} (use the provider API key, an environment variable, or !command instead)",
	"upsertModel：接入不存在：{providerId}": "upsertModel: provider not found: {providerId}",

	"必须是非空字符串": "must be a non-empty string",
	"必须是字符串": "must be a string",
	"必须是 boolean": "must be a boolean",
	"必须是正整数": "must be a positive integer",
	"必须是对象": "must be an object",
	"值必须是字符串": "value must be a string",
	"必须是字符串数组": "must be an array of strings",
	"必须是字符串或 null": "must be a string or null",
	"必须是有限数字": "must be a finite number",
	"必须是非负数": "must be non-negative",
	"必须是数组": "must be an array",
	"必须是 text 或 image": "must be text or image",
	"必须是合法 API 协议": "must be a valid API protocol",
	"必须是合法请求头配置": "must be a valid header profile",
	"必须是合法 service tier": "must be a valid service tier",
	"状态文件格式无效：{details}": "Invalid state file format: {details}",
	"状态文件版本不受支持：{version}": "Unsupported state file version: {version}",
	"读取状态文件失败：{error}": "Failed to read the state file: {error}",
	"state.json {path}: {message}": "state.json {path}: {message}",
	"未知 API 协议：{value}": "unknown API protocol: {value}",
	"未知请求头：{value}": "unknown request-header profile: {value}",
	"未知 OpenAI service tier：{value}": "unknown OpenAI service tier: {value}",
	"必须是非空数组": "must be a non-empty array",
	"必须是非负数字": "must be a non-negative number",
	"未知 thinking level": "unknown thinking level",
	"不能使用插件内置请求头保留名": "cannot use a request-header name reserved by the plugin",
	"只能保存 ClaudeCode/Codex 内置 profile 的抓包数据": "only captured data for the built-in ClaudeCode/Codex profiles can be saved",
	"根节点必须是对象": "root must be an object",
	"不支持的版本：{version}": "unsupported version: {version}",
	"models.json/state.json 正在事务更新或持续变化；请稍后重试。": "models.json/state.json is being updated by a transaction or changing continuously. Please try again shortly.",
	"模型发现已取消": "Model discovery was cancelled",
	"临时模型注册失败，无法解析模型列表认证": "Temporary model registration failed; model-list authentication could not be resolved",
	"请求认证解析失败": "Failed to resolve request authentication",
	"API key 未配置或解析为空，无法拉取模型列表": "The API key is not configured or resolved to an empty value; the model list cannot be fetched",
	"模型列表请求总计超时（10 秒）": "The model-list request timed out after 10 seconds",
	"上游模型 ID 长度必须为 1-{maxLength} 个字符": "Upstream model IDs must be 1-{maxLength} characters long",
	"上游模型 ID 包含控制字符或终端转义序列，已拒绝显示": "An upstream model ID contains control characters or terminal escape sequences and was rejected",
	"上游返回 {count} 个模型，超过上限 {maxCount}": "The upstream returned {count} models, exceeding the limit of {maxCount}",
	"模型列表响应体超过 {maxBytes} 字节上限": "The model-list response exceeds the {maxBytes}-byte limit",
} as const;

export type MessageKey = keyof typeof ENGLISH_MESSAGES;
export type TranslationValues = Readonly<Record<string, string | number>>;

let currentLanguage: UiLanguage = DEFAULT_UI_LANGUAGE;

export function isUiLanguage(value: unknown): value is UiLanguage {
	return typeof value === "string" && (SUPPORTED_UI_LANGUAGES as readonly string[]).includes(value);
}

export function getUiLanguage(): UiLanguage {
	return currentLanguage;
}

export function setUiLanguage(language: UiLanguage): void {
	currentLanguage = language;
}

function interpolate(template: string, values: TranslationValues): string {
	return template.replace(/\{([A-Za-z][A-Za-z0-9]*)\}/g, (placeholder, name: string) => {
		const value = values[name];
		return value === undefined ? placeholder : String(value);
	});
}

export function t(key: MessageKey, values: TranslationValues = {}): string {
	const template = currentLanguage === "en" ? ENGLISH_MESSAGES[key] : key;
	return interpolate(template, values);
}

export function joinLocalizedList(items: readonly string[]): string {
	return items.join(currentLanguage === "en" ? ", " : "、");
}

export function getEnglishMessageEntries(): ReadonlyArray<readonly [MessageKey, string]> {
	return Object.entries(ENGLISH_MESSAGES) as Array<[MessageKey, string]>;
}