use axum::Extension;
use axum::extract::{FromRef, Json, Path, Query, State};
use serde::Deserialize;
use utoipa::IntoParams;
use uuid::Uuid;

use erp_core::error::AppError;
use erp_core::rbac::require_permission;
use erp_core::types::{ApiResponse, PaginatedResponse, TenantContext};

use crate::dto::health_data_dto::*;
use crate::dto::DeleteWithVersion;
use crate::service::health_data_service;
use crate::service::trend_service;
use crate::state::HealthState;

// ---------------------------------------------------------------------------
// 查询参数
// ---------------------------------------------------------------------------

#[derive(Debug, Deserialize, IntoParams)]
pub struct PaginationParams {
    pub page: Option<u64>,
    pub page_size: Option<u64>,
}

#[derive(Debug, Deserialize, IntoParams)]
pub struct IndicatorTimeseriesParams {
    pub start_date: Option<chrono::NaiveDate>,
    pub end_date: Option<chrono::NaiveDate>,
}

#[derive(Debug, serde::Deserialize, utoipa::ToSchema)]
pub struct GenerateTrendReq {
    pub period_start: chrono::NaiveDate,
    pub period_end: chrono::NaiveDate,
}

#[derive(Debug, serde::Deserialize, utoipa::ToSchema)]
pub struct UpdateWithVersion<T> {
    pub data: T,
    pub version: i32,
}

// ---------------------------------------------------------------------------
// 生命体征
// ---------------------------------------------------------------------------

pub async fn list_vital_signs<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<Uuid>,
    Query(params): Query<PaginationParams>,
) -> Result<Json<ApiResponse<PaginatedResponse<VitalSignsResp>>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.list")?;
    let page = params.page.unwrap_or(1);
    let page_size = params.page_size.unwrap_or(20);
    let result = health_data_service::list_vital_signs(
        &state, ctx.tenant_id, patient_id, page, page_size,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn create_vital_signs<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<Uuid>,
    Json(req): Json<CreateVitalSignsReq>,
) -> Result<Json<ApiResponse<VitalSignsResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    let mut req = req;
    req.sanitize();
    let result = health_data_service::create_vital_signs(
        &state, ctx.tenant_id, patient_id, Some(ctx.user_id), req,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn update_vital_signs<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path((patient_id, vid)): Path<(Uuid, Uuid)>,
    Json(req): Json<UpdateVitalSignsWithVersion>,
) -> Result<Json<ApiResponse<VitalSignsResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    let mut data = req.data;
    data.sanitize();
    let result = health_data_service::update_vital_signs(
        &state, ctx.tenant_id, patient_id, vid, Some(ctx.user_id), data, req.version,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn delete_vital_signs<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path((_patient_id, vid)): Path<(Uuid, Uuid)>,
    Json(req): Json<DeleteWithVersion>,
) -> Result<Json<ApiResponse<()>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    health_data_service::delete_vital_signs(&state, ctx.tenant_id, vid, Some(ctx.user_id), req.version).await?;
    Ok(Json(ApiResponse::ok(())))
}

// ---------------------------------------------------------------------------
// 化验报告
// ---------------------------------------------------------------------------

pub async fn list_lab_reports<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<Uuid>,
    Query(params): Query<PaginationParams>,
) -> Result<Json<ApiResponse<PaginatedResponse<LabReportResp>>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.list")?;
    let page = params.page.unwrap_or(1);
    let page_size = params.page_size.unwrap_or(20);
    let result = health_data_service::list_lab_reports(
        &state, ctx.tenant_id, patient_id, page, page_size,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn create_lab_report<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<Uuid>,
    Json(req): Json<CreateLabReportReq>,
) -> Result<Json<ApiResponse<LabReportResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    let mut req = req;
    req.sanitize();
    let result = health_data_service::create_lab_report(
        &state, ctx.tenant_id, patient_id, Some(ctx.user_id), req,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn update_lab_report<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path((_patient_id, rid)): Path<(Uuid, Uuid)>,
    Json(req): Json<UpdateLabReportWithVersion>,
) -> Result<Json<ApiResponse<LabReportResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    let mut data = req.data;
    data.sanitize();
    let result = health_data_service::update_lab_report(
        &state, ctx.tenant_id, _patient_id, rid, Some(ctx.user_id), data, req.version,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn delete_lab_report<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path((_patient_id, rid)): Path<(Uuid, Uuid)>,
    Json(req): Json<DeleteWithVersion>,
) -> Result<Json<ApiResponse<()>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    health_data_service::delete_lab_report(&state, ctx.tenant_id, rid, Some(ctx.user_id), req.version).await?;
    Ok(Json(ApiResponse::ok(())))
}

pub async fn review_lab_report<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path((_patient_id, rid)): Path<(Uuid, Uuid)>,
    Json(req): Json<ReviewLabReportWithVersion>,
) -> Result<Json<ApiResponse<LabReportResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    let mut data = req.data;
    data.sanitize();
    let result = health_data_service::review_lab_report(
        &state, ctx.tenant_id, _patient_id, rid, ctx.user_id, data, req.version,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

// ---------------------------------------------------------------------------
// 健康档案
// ---------------------------------------------------------------------------

pub async fn list_health_records<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<Uuid>,
    Query(params): Query<PaginationParams>,
) -> Result<Json<ApiResponse<PaginatedResponse<HealthRecordResp>>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.list")?;
    let page = params.page.unwrap_or(1);
    let page_size = params.page_size.unwrap_or(20);
    let result = health_data_service::list_health_records(
        &state, ctx.tenant_id, patient_id, page, page_size,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn create_health_record<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<Uuid>,
    Json(req): Json<CreateHealthRecordReq>,
) -> Result<Json<ApiResponse<HealthRecordResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    let mut req = req;
    req.sanitize();
    let result = health_data_service::create_health_record(
        &state, ctx.tenant_id, patient_id, Some(ctx.user_id), req,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn update_health_record<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path((patient_id, rid)): Path<(Uuid, Uuid)>,
    Json(req): Json<UpdateHealthRecordWithVersion>,
) -> Result<Json<ApiResponse<HealthRecordResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    let mut data = req.data;
    data.sanitize();
    let result = health_data_service::update_health_record(
        &state, ctx.tenant_id, patient_id, rid, Some(ctx.user_id), data, req.version,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn delete_health_record<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path((_patient_id, rid)): Path<(Uuid, Uuid)>,
    Json(req): Json<DeleteWithVersion>,
) -> Result<Json<ApiResponse<()>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    health_data_service::delete_health_record(&state, ctx.tenant_id, rid, Some(ctx.user_id), req.version).await?;
    Ok(Json(ApiResponse::ok(())))
}

// ---------------------------------------------------------------------------
// 趋势分析
// ---------------------------------------------------------------------------

pub async fn list_trends<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<Uuid>,
    Query(params): Query<PaginationParams>,
) -> Result<Json<ApiResponse<PaginatedResponse<TrendResp>>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.list")?;
    let page = params.page.unwrap_or(1);
    let page_size = params.page_size.unwrap_or(20);
    let result = trend_service::list_trends(
        &state, ctx.tenant_id, patient_id, page, page_size,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn generate_trend<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<Uuid>,
    Json(req): Json<GenerateTrendReq>,
) -> Result<Json<ApiResponse<TrendResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.manage")?;
    let result = trend_service::generate_trend(
        &state, ctx.tenant_id, patient_id, Some(ctx.user_id), req.period_start, req.period_end,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn get_indicator_timeseries<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path((patient_id, indicator)): Path<(Uuid, String)>,
    Query(params): Query<IndicatorTimeseriesParams>,
) -> Result<Json<ApiResponse<IndicatorTimeseriesResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.list")?;
    let result = trend_service::get_indicator_timeseries(
        &state, ctx.tenant_id, patient_id, indicator, params.start_date, params.end_date,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

// ---------------------------------------------------------------------------
// 小程序趋势查询（通过当前用户关联 patient，无需传 patient_id）
// ---------------------------------------------------------------------------

pub async fn get_mini_trend<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Query(params): Query<MiniTrendQueryParams>,
) -> Result<Json<ApiResponse<MiniTrendResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.list")?;
    let result = trend_service::get_mini_trend(
        &state, ctx.tenant_id, ctx.user_id, params.indicator, params.range,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

// ---------------------------------------------------------------------------
// 小程序今日体征摘要（通过当前用户关联 patient，无需传 patient_id）
// ---------------------------------------------------------------------------

pub async fn get_mini_today<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Query(params): Query<MiniTodayParams>,
) -> Result<Json<ApiResponse<MiniTodayResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.health-data.list")?;
    let result = trend_service::get_mini_today(
        &state, ctx.tenant_id, ctx.user_id, params.patient_id,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

/// 小程序今日体征请求参数
#[derive(Debug, serde::Deserialize, utoipa::IntoParams)]
pub struct MiniTodayParams {
    /// 可选：直接指定患者 ID（小程序传入当前选中患者）
    pub patient_id: Option<Uuid>,
}

// ---------------------------------------------------------------------------
// 带版本号的更新请求包装
// ---------------------------------------------------------------------------

#[derive(Debug, serde::Deserialize, utoipa::ToSchema)]
pub struct UpdateVitalSignsWithVersion {
    #[serde(flatten)]
    pub data: UpdateVitalSignsReq,
    pub version: i32,
}

#[derive(Debug, serde::Deserialize, utoipa::ToSchema)]
pub struct UpdateLabReportWithVersion {
    #[serde(flatten)]
    pub data: UpdateLabReportReq,
    pub version: i32,
}

#[derive(Debug, serde::Deserialize, utoipa::ToSchema)]
pub struct UpdateHealthRecordWithVersion {
    #[serde(flatten)]
    pub data: UpdateHealthRecordReq,
    pub version: i32,
}

#[derive(Debug, serde::Deserialize, utoipa::ToSchema)]
pub struct ReviewLabReportWithVersion {
    #[serde(flatten)]
    pub data: ReviewLabReportReq,
    pub version: i32,
}