cc-switch-tui 0.2.0

use crate::app_config::AppType;
use crate::config::{get_app_config_dir, home_dir};
use crate::error::AppError;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::fs;
use std::path::PathBuf;
use std::sync::{OnceLock, RwLock};

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct VisibleApps {
    #[serde(default = "default_visible_app_claude")]
    pub claude: bool,
    #[serde(default = "default_visible_app_codex")]
    pub codex: bool,
    #[serde(default = "default_visible_app_gemini")]
    pub gemini: bool,
    #[serde(default = "default_visible_app_opencode")]
    pub opencode: bool,
    #[serde(default = "default_visible_app_openclaw")]
    pub openclaw: bool,
    #[serde(default = "default_visible_app_hermes")]
    pub hermes: bool,
}

fn default_visible_app_claude() -> bool {
    true
}

fn default_visible_app_codex() -> bool {
    true
}

fn default_visible_app_gemini() -> bool {
    false
}

fn default_visible_app_opencode() -> bool {
    true
}

fn default_visible_app_openclaw() -> bool {
    true
}

fn default_visible_app_hermes() -> bool {
    true
}

pub fn default_visible_apps() -> VisibleApps {
    VisibleApps {
        claude: true,
        codex: true,
        gemini: false,
        opencode: true,
        openclaw: true,
        hermes: true,
    }
}

impl Default for VisibleApps {
    fn default() -> Self {
        default_visible_apps()
    }
}

impl VisibleApps {
    pub fn ordered_enabled(&self) -> Vec<AppType> {
        app_order()
            .into_iter()
            .filter(|app_type| self.is_enabled_for(app_type))
            .collect()
    }

    pub fn is_enabled_for(&self, app_type: &AppType) -> bool {
        match app_type {
            AppType::Claude => self.claude,
            AppType::Codex => self.codex,
            AppType::Gemini => self.gemini,
            AppType::OpenCode => self.opencode,
            AppType::OpenClaw => self.openclaw,
            AppType::Hermes => self.hermes,
        }
    }

    pub fn set_enabled_for(&mut self, app_type: &AppType, enabled: bool) {
        match app_type {
            AppType::Claude => self.claude = enabled,
            AppType::Codex => self.codex = enabled,
            AppType::Gemini => self.gemini = enabled,
            AppType::OpenCode => self.opencode = enabled,
            AppType::OpenClaw => self.openclaw = enabled,
            AppType::Hermes => self.hermes = enabled,
        }
    }

    pub fn normalize(&mut self) {
        if self.ordered_enabled().is_empty() {
            *self = default_visible_apps();
        }
    }

    pub fn validate(&self) -> Result<(), AppError> {
        if self.ordered_enabled().is_empty() {
            return Err(AppError::InvalidInput(
                "At least one app must remain visible".to_string(),
            ));
        }

        Ok(())
    }
}

fn app_order() -> [AppType; 6] {
    [
        AppType::Claude,
        AppType::Codex,
        AppType::Gemini,
        AppType::OpenCode,
        AppType::OpenClaw,
        AppType::Hermes,
    ]
}

pub fn next_visible_app(
    visible: &VisibleApps,
    current: &AppType,
    direction: i8,
) -> Option<AppType> {
    let ordered = app_order();
    if ordered
        .iter()
        .all(|app_type| !visible.is_enabled_for(app_type))
    {
        return None;
    }

    let current_index = ordered.iter().position(|app_type| app_type == current)?;
    let step = if direction < 0 { -1 } else { 1 };
    let len = ordered.len() as isize;

    for offset in 1..=ordered.len() {
        let index = (current_index as isize + step * offset as isize).rem_euclid(len) as usize;
        let candidate = &ordered[index];
        if visible.is_enabled_for(candidate) {
            return Some(candidate.clone());
        }
    }

    None
}

/// 自定义端点配置
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct CustomEndpoint {
    pub url: String,
    pub added_at: i64,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub last_used: Option<i64>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
#[serde(rename_all = "camelCase")]
pub struct SecurityAuthSettings {
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub selected_type: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
#[serde(rename_all = "camelCase")]
pub struct SecuritySettings {
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub auth: Option<SecurityAuthSettings>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct WebDavSyncStatus {
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub last_sync_at: Option<i64>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub last_error: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub last_error_source: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub last_remote_etag: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub last_local_manifest_hash: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub last_remote_manifest_hash: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct WebDavSyncSettings {
    #[serde(default)]
    pub enabled: bool,
    #[serde(default)]
    pub base_url: String,
    #[serde(default = "default_webdav_remote_root")]
    pub remote_root: String,
    #[serde(default = "default_webdav_profile")]
    pub profile: String,
    #[serde(default)]
    pub username: String,
    #[serde(default)]
    pub password: String,
    #[serde(default)]
    pub auto_sync: bool,
    #[serde(default)]
    pub status: WebDavSyncStatus,
}

fn default_webdav_remote_root() -> String {
    "cc-switch-sync".to_string()
}

fn default_webdav_profile() -> String {
    "default".to_string()
}

const JIANGUOYUN_WEBDAV_BASE_URL: &str = "https://dav.jianguoyun.com/dav";

impl Default for WebDavSyncSettings {
    fn default() -> Self {
        Self {
            enabled: false,
            base_url: String::new(),
            remote_root: default_webdav_remote_root(),
            profile: default_webdav_profile(),
            username: String::new(),
            password: String::new(),
            auto_sync: false,
            status: WebDavSyncStatus::default(),
        }
    }
}

impl WebDavSyncSettings {
    pub fn jianguoyun_preset(username: &str, password: &str) -> Self {
        let mut settings = Self {
            enabled: true,
            base_url: JIANGUOYUN_WEBDAV_BASE_URL.to_string(),
            remote_root: default_webdav_remote_root(),
            profile: default_webdav_profile(),
            username: username.to_string(),
            password: password.to_string(),
            ..Self::default()
        };
        settings.normalize();
        settings
    }

    pub fn normalize(&mut self) {
        self.base_url = self.base_url.trim().trim_end_matches('/').to_string();
        self.remote_root = sanitize_path_segment(&self.remote_root);
        self.profile = sanitize_path_segment(&self.profile);
        self.username = self.username.trim().to_string();
        self.password = self.password.trim().to_string();
    }

    pub fn validate(&self) -> Result<(), AppError> {
        if !self.enabled && self.base_url.is_empty() {
            return Ok(());
        }
        if self.base_url.is_empty() {
            return Err(AppError::InvalidInput(
                "WebDAV base_url 不能为空".to_string(),
            ));
        }
        crate::services::webdav::parse_base_url(&self.base_url)?;
        if self.remote_root.is_empty() || self.profile.is_empty() {
            return Err(AppError::InvalidInput(
                "WebDAV remote_root/profile 不能为空".to_string(),
            ));
        }
        if self.remote_root.contains("..") || self.profile.contains("..") {
            return Err(AppError::InvalidInput(
                "WebDAV remote_root/profile 不能包含 '..'".to_string(),
            ));
        }
        Ok(())
    }
}

fn sanitize_path_segment(raw: &str) -> String {
    raw.trim()
        .trim_matches('/')
        .split('/')
        .filter(|s| !s.is_empty())
        .collect::<Vec<_>>()
        .join("/")
}

/// 应用设置结构，允许覆盖默认配置目录
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct AppSettings {
    #[serde(default = "default_show_in_tray")]
    pub show_in_tray: bool,
    #[serde(default = "default_minimize_to_tray_on_close")]
    pub minimize_to_tray_on_close: bool,
    /// 是否启用 Claude 插件联动
    #[serde(default)]
    pub enable_claude_plugin_integration: bool,
    /// 是否跳过 Claude Code 初次安装确认
    #[serde(default)]
    pub skip_claude_onboarding: bool,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub claude_config_dir: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub codex_config_dir: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub gemini_config_dir: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub opencode_config_dir: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub openclaw_config_dir: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub hermes_config_dir: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub current_provider_claude: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub current_provider_codex: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub current_provider_gemini: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub current_provider_opencode: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub current_provider_openclaw: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub current_provider_hermes: Option<String>,
    #[serde(default = "default_visible_apps")]
    pub visible_apps: VisibleApps,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub language: Option<String>,
    /// 是否开机自启
    #[serde(default)]
    pub launch_on_startup: bool,
    /// Skills 同步方式（auto|symlink|copy）
    #[serde(default)]
    pub skill_sync_method: crate::services::skill::SyncMethod,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub security: Option<SecuritySettings>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub webdav_sync: Option<WebDavSyncSettings>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub backup_retain_count: Option<u32>,
    /// Claude 自定义端点列表
    #[serde(default, skip_serializing_if = "HashMap::is_empty")]
    pub custom_endpoints_claude: HashMap<String, CustomEndpoint>,
    /// Codex 自定义端点列表
    #[serde(default, skip_serializing_if = "HashMap::is_empty")]
    pub custom_endpoints_codex: HashMap<String, CustomEndpoint>,
}

fn default_show_in_tray() -> bool {
    true
}

fn default_minimize_to_tray_on_close() -> bool {
    true
}

impl Default for AppSettings {
    fn default() -> Self {
        Self {
            show_in_tray: true,
            minimize_to_tray_on_close: true,
            enable_claude_plugin_integration: false,
            skip_claude_onboarding: false,
            claude_config_dir: None,
            codex_config_dir: None,
            gemini_config_dir: None,
            opencode_config_dir: None,
            openclaw_config_dir: None,
            hermes_config_dir: None,
            current_provider_claude: None,
            current_provider_codex: None,
            current_provider_gemini: None,
            current_provider_opencode: None,
            current_provider_openclaw: None,
            current_provider_hermes: None,
            visible_apps: default_visible_apps(),
            language: None,
            launch_on_startup: false,
            skill_sync_method: crate::services::skill::SyncMethod::default(),
            security: None,
            webdav_sync: None,
            backup_retain_count: None,
            custom_endpoints_claude: HashMap::new(),
            custom_endpoints_codex: HashMap::new(),
        }
    }
}

impl AppSettings {
    fn settings_path() -> PathBuf {
        // settings.json 可以跟随 CC_SWITCH_CONFIG_DIR，且不会形成循环依赖：
        // 路径仅依赖进程环境变量和 HOME，不依赖已持久化的 settings 内容。
        get_app_config_dir().join("settings.json")
    }

    fn normalize_common(&mut self) {
        self.claude_config_dir = self
            .claude_config_dir
            .as_ref()
            .map(|s| s.trim())
            .filter(|s| !s.is_empty())
            .map(|s| s.to_string());

        self.codex_config_dir = self
            .codex_config_dir
            .as_ref()
            .map(|s| s.trim())
            .filter(|s| !s.is_empty())
            .map(|s| s.to_string());

        self.gemini_config_dir = self
            .gemini_config_dir
            .as_ref()
            .map(|s| s.trim())
            .filter(|s| !s.is_empty())
            .map(|s| s.to_string());

        self.opencode_config_dir = self
            .opencode_config_dir
            .as_ref()
            .map(|s| s.trim())
            .filter(|s| !s.is_empty())
            .map(|s| s.to_string());

        self.openclaw_config_dir = self
            .openclaw_config_dir
            .as_ref()
            .map(|s| s.trim())
            .filter(|s| !s.is_empty())
            .map(|s| s.to_string());

        self.hermes_config_dir = self
            .hermes_config_dir
            .as_ref()
            .map(|s| s.trim())
            .filter(|s| !s.is_empty())
            .map(|s| s.to_string());

        self.language = self
            .language
            .as_ref()
            .map(|s| s.trim())
            .filter(|s| matches!(*s, "en" | "zh"))
            .map(|s| s.to_string());

        if let Some(webdav) = self.webdav_sync.as_mut() {
            webdav.normalize();
        }
    }

    fn normalize_loaded(&mut self) {
        self.normalize_common();
        self.visible_apps.normalize();
    }

    fn validate(&self) -> Result<(), AppError> {
        self.visible_apps.validate()
    }

    pub fn load() -> Self {
        let path = Self::settings_path();
        if let Ok(content) = fs::read_to_string(&path) {
            match serde_json::from_str::<AppSettings>(&content) {
                Ok(mut settings) => {
                    settings.normalize_loaded();
                    settings
                }
                Err(err) => {
                    log::warn!(
                        "解析设置文件失败，将使用默认设置。路径: {}, 错误: {}",
                        path.display(),
                        err
                    );
                    Self::default()
                }
            }
        } else {
            Self::default()
        }
    }

    pub fn save(&self) -> Result<(), AppError> {
        let mut normalized = self.clone();
        normalized.normalize_common();
        normalized.validate()?;
        let path = Self::settings_path();

        if let Some(parent) = path.parent() {
            fs::create_dir_all(parent).map_err(|e| AppError::io(parent, e))?;
        }

        let json = serde_json::to_string_pretty(&normalized)
            .map_err(|e| AppError::JsonSerialize { source: e })?;
        fs::write(&path, json).map_err(|e| AppError::io(&path, e))?;
        Ok(())
    }
}

fn settings_store() -> &'static RwLock<AppSettings> {
    static STORE: OnceLock<RwLock<AppSettings>> = OnceLock::new();
    STORE.get_or_init(|| RwLock::new(AppSettings::load()))
}

pub fn reload_settings() -> Result<(), AppError> {
    let fresh_settings = AppSettings::load();
    let mut guard = settings_store().write().expect("写入设置锁失败");
    *guard = fresh_settings;
    Ok(())
}

#[cfg(test)]
pub(crate) fn reload_test_settings() {
    let mut guard = settings_store().write().expect("写入设置锁失败");
    *guard = AppSettings::load();
}

fn resolve_override_path(raw: &str) -> PathBuf {
    if raw == "~" {
        if let Some(home) = home_dir() {
            return home;
        }
    } else if let Some(stripped) = raw.strip_prefix("~/") {
        if let Some(home) = home_dir() {
            return home.join(stripped);
        }
    } else if let Some(stripped) = raw.strip_prefix("~\\") {
        if let Some(home) = home_dir() {
            return home.join(stripped);
        }
    }

    PathBuf::from(raw)
}

pub fn get_settings() -> AppSettings {
    settings_store().read().expect("读取设置锁失败").clone()
}

pub fn update_settings(mut new_settings: AppSettings) -> Result<(), AppError> {
    new_settings.normalize_common();
    new_settings.validate()?;
    new_settings.save()?;

    let mut guard = settings_store().write().expect("写入设置锁失败");
    *guard = new_settings;
    Ok(())
}

pub fn ensure_security_auth_selected_type(selected_type: &str) -> Result<(), AppError> {
    let mut settings = get_settings();
    let current = settings
        .security
        .as_ref()
        .and_then(|sec| sec.auth.as_ref())
        .and_then(|auth| auth.selected_type.as_deref());

    if current == Some(selected_type) {
        return Ok(());
    }

    let mut security = settings.security.unwrap_or_default();
    let mut auth = security.auth.unwrap_or_default();
    auth.selected_type = Some(selected_type.to_string());
    security.auth = Some(auth);
    settings.security = Some(security);

    update_settings(settings)
}

pub fn get_claude_override_dir() -> Option<PathBuf> {
    let settings = settings_store().read().ok()?;
    settings
        .claude_config_dir
        .as_ref()
        .map(|p| resolve_override_path(p))
}

pub fn get_codex_override_dir() -> Option<PathBuf> {
    let settings = settings_store().read().ok()?;
    settings
        .codex_config_dir
        .as_ref()
        .map(|p| resolve_override_path(p))
}

pub fn get_gemini_override_dir() -> Option<PathBuf> {
    let settings = settings_store().read().ok()?;
    settings
        .gemini_config_dir
        .as_ref()
        .map(|p| resolve_override_path(p))
}

pub fn get_opencode_override_dir() -> Option<PathBuf> {
    let settings = settings_store().read().ok()?;
    settings
        .opencode_config_dir
        .as_ref()
        .map(|p| resolve_override_path(p))
}

pub fn get_openclaw_override_dir() -> Option<PathBuf> {
    let settings = settings_store().read().ok()?;
    settings
        .openclaw_config_dir
        .as_ref()
        .map(|p| resolve_override_path(p))
}

pub fn get_hermes_override_dir() -> Option<PathBuf> {
    let settings = settings_store().read().ok()?;
    settings
        .hermes_config_dir
        .as_ref()
        .map(|p| resolve_override_path(p))
}

pub fn get_current_provider(app_type: &AppType) -> Option<String> {
    let settings = settings_store().read().ok()?;
    match app_type {
        AppType::Claude => settings.current_provider_claude.clone(),
        AppType::Codex => settings.current_provider_codex.clone(),
        AppType::Gemini => settings.current_provider_gemini.clone(),
        AppType::OpenCode => settings.current_provider_opencode.clone(),
        AppType::OpenClaw => settings.current_provider_openclaw.clone(),
        AppType::Hermes => settings.current_provider_hermes.clone(),
    }
}

pub fn set_current_provider(app_type: &AppType, id: Option<&str>) -> Result<(), AppError> {
    let mut settings = get_settings();

    match app_type {
        AppType::Claude => settings.current_provider_claude = id.map(|value| value.to_string()),
        AppType::Codex => settings.current_provider_codex = id.map(|value| value.to_string()),
        AppType::Gemini => settings.current_provider_gemini = id.map(|value| value.to_string()),
        AppType::OpenCode => settings.current_provider_opencode = id.map(|value| value.to_string()),
        AppType::OpenClaw => settings.current_provider_openclaw = id.map(|value| value.to_string()),
        AppType::Hermes => settings.current_provider_hermes = id.map(|value| value.to_string()),
    }

    update_settings(settings)
}

pub fn get_visible_apps() -> VisibleApps {
    settings_store()
        .read()
        .map(|settings| settings.visible_apps.clone())
        .unwrap_or_else(|_| default_visible_apps())
}

pub fn set_visible_apps(visible_apps: VisibleApps) -> Result<(), AppError> {
    visible_apps.validate()?;

    let mut settings = get_settings();
    settings.visible_apps = visible_apps;
    update_settings(settings)
}

pub fn get_effective_current_provider(
    db: &crate::database::Database,
    app_type: &AppType,
) -> Result<Option<String>, AppError> {
    if let Some(local_id) = get_current_provider(app_type) {
        let providers = db.get_all_providers(app_type.as_str())?;
        if providers.contains_key(&local_id) {
            return Ok(Some(local_id));
        }

        log::warn!(
            "本地 settings 中的供应商 {} ({}) 在数据库中不存在，将清理并 fallback 到数据库",
            local_id,
            app_type.as_str()
        );
        let _ = set_current_provider(app_type, None);
    }

    db.get_current_provider(app_type.as_str())
}

pub fn get_skill_sync_method() -> crate::services::skill::SyncMethod {
    settings_store()
        .read()
        .map(|s| s.skill_sync_method)
        .unwrap_or_default()
}

pub fn effective_backup_retain_count() -> usize {
    settings_store()
        .read()
        .map(|settings| {
            settings
                .backup_retain_count
                .map(|count| usize::try_from(count).unwrap_or(usize::MAX).max(1))
                .unwrap_or(10)
        })
        .unwrap_or(10)
}

pub fn set_skill_sync_method(method: crate::services::skill::SyncMethod) -> Result<(), AppError> {
    let mut settings = get_settings();
    settings.skill_sync_method = method;
    update_settings(settings)
}

pub fn get_webdav_sync_settings() -> Option<WebDavSyncSettings> {
    settings_store()
        .read()
        .ok()
        .and_then(|s| s.webdav_sync.clone())
}

pub fn set_webdav_sync_settings(webdav_sync: Option<WebDavSyncSettings>) -> Result<(), AppError> {
    let mut settings = get_settings();
    settings.webdav_sync = match webdav_sync {
        Some(mut cfg) => {
            cfg.normalize();
            cfg.validate()?;
            Some(cfg)
        }
        None => None,
    };
    update_settings(settings)
}

pub fn update_webdav_sync_status(status: WebDavSyncStatus) -> Result<(), AppError> {
    let mut settings = get_settings();
    if let Some(ref mut webdav) = settings.webdav_sync {
        webdav.status = status;
    }
    update_settings(settings)
}

pub fn webdav_jianguoyun_preset(username: &str, password: &str) -> WebDavSyncSettings {
    WebDavSyncSettings::jianguoyun_preset(username, password)
}

pub fn get_skip_claude_onboarding() -> bool {
    settings_store()
        .read()
        .map(|s| s.skip_claude_onboarding)
        .unwrap_or(false)
}

pub fn get_enable_claude_plugin_integration() -> bool {
    settings_store()
        .read()
        .map(|s| s.enable_claude_plugin_integration)
        .unwrap_or(false)
}

pub fn set_enable_claude_plugin_integration(enabled: bool) -> Result<(), AppError> {
    let mut settings = get_settings();
    settings.enable_claude_plugin_integration = enabled;
    update_settings(settings)
}

pub fn set_skip_claude_onboarding(enabled: bool) -> Result<(), AppError> {
    if enabled {
        crate::claude_mcp::set_has_completed_onboarding()?;
    } else {
        crate::claude_mcp::clear_has_completed_onboarding()?;
    }

    let mut settings = get_settings();
    settings.skip_claude_onboarding = enabled;
    update_settings(settings)
}