use indexmap::IndexMap;
use tauri::State;

use crate::app_config::AppType;
use crate::commands::copilot::CopilotAuthState;
use crate::error::AppError;
use crate::provider::Provider;
use crate::services::{
    EndpointLatency, ProviderService, ProviderSortUpdate, SpeedtestService, SwitchResult,
};
use crate::store::AppState;
use std::str::FromStr;

// 常量定义
const TEMPLATE_TYPE_GITHUB_COPILOT: &str = "github_copilot";
const COPILOT_UNIT_PREMIUM: &str = "requests";

/// 获取所有供应商
#[tauri::command]
pub fn get_providers(
    state: State<'_, AppState>,
    app: String,
) -> Result<IndexMap<String, Provider>, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::list(state.inner(), app_type).map_err(|e| e.to_string())
}

#[tauri::command]
pub fn get_current_provider(state: State<'_, AppState>, app: String) -> Result<String, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::current(state.inner(), app_type).map_err(|e| e.to_string())
}

#[tauri::command]
pub fn add_provider(
    state: State<'_, AppState>,
    app: String,
    provider: Provider,
    #[allow(non_snake_case)] addToLive: Option<bool>,
) -> Result<bool, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::add(state.inner(), app_type, provider, addToLive.unwrap_or(true))
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn update_provider(
    state: State<'_, AppState>,
    app: String,
    provider: Provider,
    #[allow(non_snake_case)] originalId: Option<String>,
) -> Result<bool, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::update(state.inner(), app_type, originalId.as_deref(), provider)
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn delete_provider(
    state: State<'_, AppState>,
    app: String,
    id: String,
) -> Result<bool, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::delete(state.inner(), app_type, &id)
        .map(|_| true)
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn remove_provider_from_live_config(
    state: tauri::State<'_, AppState>,
    app: String,
    id: String,
) -> Result<bool, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::remove_from_live_config(state.inner(), app_type, &id)
        .map(|_| true)
        .map_err(|e| e.to_string())
}

fn switch_provider_internal(
    state: &AppState,
    app_type: AppType,
    id: &str,
) -> Result<SwitchResult, AppError> {
    ProviderService::switch(state, app_type, id)
}

#[cfg_attr(not(feature = "test-hooks"), doc(hidden))]
pub fn switch_provider_test_hook(
    state: &AppState,
    app_type: AppType,
    id: &str,
) -> Result<SwitchResult, AppError> {
    switch_provider_internal(state, app_type, id)
}

#[tauri::command]
pub fn switch_provider(
    state: State<'_, AppState>,
    app: String,
    id: String,
) -> Result<SwitchResult, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    switch_provider_internal(&state, app_type, &id).map_err(|e| e.to_string())
}

fn import_default_config_internal(state: &AppState, app_type: AppType) -> Result<bool, AppError> {
    let imported = ProviderService::import_default_config(state, app_type.clone())?;

    if imported {
        // Extract common config snippet (mirrors old startup logic in lib.rs)
        if state
            .db
            .should_auto_extract_config_snippet(app_type.as_str())?
        {
            match ProviderService::extract_common_config_snippet(state, app_type.clone()) {
                Ok(snippet) if !snippet.is_empty() && snippet != "{}" => {
                    let _ = state
                        .db
                        .set_config_snippet(app_type.as_str(), Some(snippet));
                    let _ = state
                        .db
                        .set_config_snippet_cleared(app_type.as_str(), false);
                }
                _ => {}
            }
        }

        ProviderService::migrate_legacy_common_config_usage_if_needed(state, app_type.clone())?;
    }

    Ok(imported)
}

#[cfg_attr(not(feature = "test-hooks"), doc(hidden))]
pub fn import_default_config_test_hook(
    state: &AppState,
    app_type: AppType,
) -> Result<bool, AppError> {
    import_default_config_internal(state, app_type)
}

#[tauri::command]
pub fn import_default_config(state: State<'_, AppState>, app: String) -> Result<bool, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    import_default_config_internal(&state, app_type).map_err(Into::into)
}

#[allow(non_snake_case)]
#[tauri::command]
pub async fn queryProviderUsage(
    state: State<'_, AppState>,
    copilot_state: State<'_, CopilotAuthState>,
    #[allow(non_snake_case)] providerId: String, // 使用 camelCase 匹配前端
    app: String,
) -> Result<crate::provider::UsageResult, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;

    // 检查是否为 GitHub Copilot 模板类型，并解析绑定账号
    let (is_copilot_template, copilot_account_id) = {
        let providers = state
            .db
            .get_all_providers(app_type.as_str())
            .map_err(|e| format!("Failed to get providers: {e}"))?;

        let provider = providers.get(&providerId);
        let is_copilot = provider
            .and_then(|p| p.meta.as_ref())
            .and_then(|m| m.usage_script.as_ref())
            .and_then(|s| s.template_type.as_ref())
            .map(|t| t == TEMPLATE_TYPE_GITHUB_COPILOT)
            .unwrap_or(false);
        let account_id = provider
            .and_then(|p| p.meta.as_ref())
            .and_then(|m| m.managed_account_id_for(TEMPLATE_TYPE_GITHUB_COPILOT));

        (is_copilot, account_id)
    };

    if is_copilot_template {
        // 使用 Copilot 专用 API
        let auth_manager = copilot_state.0.read().await;
        let usage = match copilot_account_id.as_deref() {
            Some(account_id) => auth_manager
                .fetch_usage_for_account(account_id)
                .await
                .map_err(|e| format!("Failed to fetch Copilot usage: {e}"))?,
            None => auth_manager
                .fetch_usage()
                .await
                .map_err(|e| format!("Failed to fetch Copilot usage: {e}"))?,
        };
        let premium = &usage.quota_snapshots.premium_interactions;
        let used = premium.entitlement - premium.remaining;

        return Ok(crate::provider::UsageResult {
            success: true,
            data: Some(vec![crate::provider::UsageData {
                plan_name: Some(usage.copilot_plan),
                remaining: Some(premium.remaining as f64),
                total: Some(premium.entitlement as f64),
                used: Some(used as f64),
                unit: Some(COPILOT_UNIT_PREMIUM.to_string()),
                is_valid: Some(true),
                invalid_message: None,
                extra: Some(format!("Reset: {}", usage.quota_reset_date)),
            }]),
            error: None,
        });
    }

    ProviderService::query_usage(state.inner(), app_type, &providerId)
        .await
        .map_err(|e| e.to_string())
}

#[allow(non_snake_case)]
#[allow(clippy::too_many_arguments)]
#[tauri::command]
pub async fn testUsageScript(
    state: State<'_, AppState>,
    #[allow(non_snake_case)] providerId: String,
    app: String,
    #[allow(non_snake_case)] scriptCode: String,
    timeout: Option<u64>,
    #[allow(non_snake_case)] apiKey: Option<String>,
    #[allow(non_snake_case)] baseUrl: Option<String>,
    #[allow(non_snake_case)] accessToken: Option<String>,
    #[allow(non_snake_case)] userId: Option<String>,
    #[allow(non_snake_case)] templateType: Option<String>,
) -> Result<crate::provider::UsageResult, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::test_usage_script(
        state.inner(),
        app_type,
        &providerId,
        &scriptCode,
        timeout.unwrap_or(10),
        apiKey.as_deref(),
        baseUrl.as_deref(),
        accessToken.as_deref(),
        userId.as_deref(),
        templateType.as_deref(),
    )
    .await
    .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn read_live_provider_settings(app: String) -> Result<serde_json::Value, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::read_live_settings(app_type).map_err(|e| e.to_string())
}

#[tauri::command]
pub async fn test_api_endpoints(
    urls: Vec<String>,
    #[allow(non_snake_case)] timeoutSecs: Option<u64>,
) -> Result<Vec<EndpointLatency>, String> {
    SpeedtestService::test_endpoints(urls, timeoutSecs)
        .await
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn get_custom_endpoints(
    state: State<'_, AppState>,
    app: String,
    #[allow(non_snake_case)] providerId: String,
) -> Result<Vec<crate::settings::CustomEndpoint>, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::get_custom_endpoints(state.inner(), app_type, &providerId)
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn add_custom_endpoint(
    state: State<'_, AppState>,
    app: String,
    #[allow(non_snake_case)] providerId: String,
    url: String,
) -> Result<(), String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::add_custom_endpoint(state.inner(), app_type, &providerId, url)
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn remove_custom_endpoint(
    state: State<'_, AppState>,
    app: String,
    #[allow(non_snake_case)] providerId: String,
    url: String,
) -> Result<(), String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::remove_custom_endpoint(state.inner(), app_type, &providerId, url)
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn update_endpoint_last_used(
    state: State<'_, AppState>,
    app: String,
    #[allow(non_snake_case)] providerId: String,
    url: String,
) -> Result<(), String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::update_endpoint_last_used(state.inner(), app_type, &providerId, url)
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn update_providers_sort_order(
    state: State<'_, AppState>,
    app: String,
    updates: Vec<ProviderSortUpdate>,
) -> Result<bool, String> {
    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
    ProviderService::update_sort_order(state.inner(), app_type, updates).map_err(|e| e.to_string())
}

use crate::provider::UniversalProvider;
use std::collections::HashMap;
use tauri::{AppHandle, Emitter};

#[derive(Clone, serde::Serialize)]
pub struct UniversalProviderSyncedEvent {
    pub action: String,
    pub id: String,
}

fn emit_universal_provider_synced(app: &AppHandle, action: &str, id: &str) {
    let _ = app.emit(
        "universal-provider-synced",
        UniversalProviderSyncedEvent {
            action: action.to_string(),
            id: id.to_string(),
        },
    );
}

#[tauri::command]
pub fn get_universal_providers(
    state: State<'_, AppState>,
) -> Result<HashMap<String, UniversalProvider>, String> {
    ProviderService::list_universal(state.inner()).map_err(|e| e.to_string())
}

#[tauri::command]
pub fn get_universal_provider(
    state: State<'_, AppState>,
    id: String,
) -> Result<Option<UniversalProvider>, String> {
    ProviderService::get_universal(state.inner(), &id).map_err(|e| e.to_string())
}

#[tauri::command]
pub fn upsert_universal_provider(
    app: AppHandle,
    state: State<'_, AppState>,
    provider: UniversalProvider,
) -> Result<bool, String> {
    let id = provider.id.clone();
    let result =
        ProviderService::upsert_universal(state.inner(), provider).map_err(|e| e.to_string())?;

    emit_universal_provider_synced(&app, "upsert", &id);

    Ok(result)
}

#[tauri::command]
pub fn delete_universal_provider(
    app: AppHandle,
    state: State<'_, AppState>,
    id: String,
) -> Result<bool, String> {
    let result =
        ProviderService::delete_universal(state.inner(), &id).map_err(|e| e.to_string())?;

    emit_universal_provider_synced(&app, "delete", &id);

    Ok(result)
}

#[tauri::command]
pub fn sync_universal_provider(
    app: AppHandle,
    state: State<'_, AppState>,
    id: String,
) -> Result<bool, String> {
    let result =
        ProviderService::sync_universal_to_apps(state.inner(), &id).map_err(|e| e.to_string())?;

    emit_universal_provider_synced(&app, "sync", &id);

    Ok(result)
}

#[tauri::command]
pub fn import_opencode_providers_from_live(state: State<'_, AppState>) -> Result<usize, String> {
    crate::services::provider::import_opencode_providers_from_live(state.inner())
        .map_err(|e| e.to_string())
}

#[tauri::command]
pub fn get_opencode_live_provider_ids() -> Result<Vec<String>, String> {
    crate::opencode_config::get_providers()
        .map(|providers| providers.keys().cloned().collect())
        .map_err(|e| e.to_string())
}

// ============================================================================
// OpenClaw 专属命令 → 已迁移至 commands/openclaw.rs
// ============================================================================