use axum::Extension;
use axum::extract::{FromRef, Json, Path, Query, State};
use erp_core::error::AppError;
use erp_core::rbac::require_permission;
use erp_core::types::{ApiResponse, PaginatedResponse, TenantContext};
use serde::Deserialize;
use validator::Validate;

use crate::dto::consent_dto::*;
use crate::service::consent_service;
use crate::state::HealthState;

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

#[utoipa::path(
    get,
    path = "/health/patients/{patient_id}/consents",
    responses((status = 200, description = "知情同意列表")),
    tag = "知情同意",
    security(("bearer_auth" = [])),
)]
pub async fn list_consents<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(patient_id): Path<uuid::Uuid>,
    Query(params): Query<ConsentListParams>,
) -> Result<Json<ApiResponse<PaginatedResponse<ConsentResp>>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.consent.list")?;
    let page = params.page.unwrap_or(1);
    let page_size = params.page_size.unwrap_or(20);
    let result =
        consent_service::list_consents(&state, ctx.tenant_id, patient_id, page, page_size).await?;
    Ok(Json(ApiResponse::ok(result)))
}

#[utoipa::path(
    post,
    path = "/health/consents",
    responses((status = 200, description = "授权成功")),
    tag = "知情同意",
    security(("bearer_auth" = [])),
)]
pub async fn grant_consent<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Json(req): Json<CreateConsentReq>,
) -> Result<Json<ApiResponse<ConsentResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.consent.manage")?;
    let mut req = req;
    req.sanitize();
    let result =
        consent_service::grant_consent(&state, ctx.tenant_id, Some(ctx.user_id), req).await?;
    Ok(Json(ApiResponse::ok(result)))
}

#[utoipa::path(
    put,
    path = "/health/consents/{consent_id}/revoke",
    responses((status = 200, description = "撤销成功")),
    tag = "知情同意",
    security(("bearer_auth" = [])),
)]
pub async fn revoke_consent<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(consent_id): Path<uuid::Uuid>,
    Json(req): Json<RevokeConsentReq>,
) -> Result<Json<ApiResponse<ConsentResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.consent.manage")?;
    let mut req = req;
    req.sanitize();
    let result =
        consent_service::revoke_consent(&state, ctx.tenant_id, consent_id, Some(ctx.user_id), req)
            .await?;
    Ok(Json(ApiResponse::ok(result)))
}

/// 患者端签署知情同意 — 验证 consent 归属当前患者后更新状态为 granted
#[utoipa::path(
    post,
    path = "/health/consents/{consent_id}/patient-sign",
    request_body = PatientSignConsentReq,
    responses(
        (status = 200, description = "签署成功"),
        (status = 400, description = "状态不允许签署或不属于该患者"),
        (status = 404, description = "知情同意记录不存在"),
    ),
    tag = "知情同意",
    security(("bearer_auth" = [])),
)]
pub async fn patient_sign_consent<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(consent_id): Path<uuid::Uuid>,
    Json(req): Json<crate::dto::consent_dto::PatientSignConsentReq>,
) -> Result<Json<ApiResponse<crate::dto::consent_dto::ConsentResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    // 患者自己签署，只需认证，不需要特殊权限
    req.validate()
        .map_err(|e| AppError::Validation(e.to_string()))?;
    let result =
        consent_service::patient_sign_consent(&state, ctx.tenant_id, ctx.user_id, consent_id, req)
            .await?;
    Ok(Json(ApiResponse::ok(result)))
}