use axum::extract::{FromRef, Path, Query, State};
use axum::response::IntoResponse;
use axum::Extension;
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::service::device_reading_service;
use crate::state::HealthState;

#[derive(Debug, Deserialize)]
pub struct PatientPath {
    pub patient_id: Uuid,
}

#[derive(Debug, Deserialize, IntoParams)]
pub struct ReadingListQuery {
    pub device_type: Option<String>,
    pub hours: Option<i64>,
    pub page: Option<u64>,
    pub page_size: Option<u64>,
}

#[derive(Debug, Deserialize, IntoParams)]
pub struct HourlyQuery {
    pub device_type: String,
    pub days: Option<i64>,
    pub page: Option<u64>,
    pub page_size: Option<u64>,
}

pub async fn batch_create<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(path): Path<PatientPath>,
    axum::Json(body): axum::Json<device_reading_service::BatchReadingRequest>,
) -> Result<impl IntoResponse, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.device-readings.manage")?;
    let result = device_reading_service::batch_create_readings(
        &state, ctx.tenant_id, path.patient_id, body,
    ).await?;
    Ok(axum::Json(ApiResponse::ok(result)))
}

pub async fn list_readings<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(path): Path<PatientPath>,
    Query(query): Query<ReadingListQuery>,
) -> Result<impl IntoResponse, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.device-readings.list")?;
    let page = query.page.unwrap_or(1);
    let page_size = query.page_size.unwrap_or(20);
    let result = device_reading_service::query_device_readings(
        &state, ctx.tenant_id, path.patient_id,
        query.device_type.as_deref(), query.hours, page, page_size,
    ).await?;
    Ok(axum::Json(ApiResponse::ok(result)))
}

pub async fn list_hourly<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(path): Path<PatientPath>,
    Query(query): Query<HourlyQuery>,
) -> Result<impl IntoResponse, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.device-readings.list")?;
    let page = query.page.unwrap_or(1);
    let page_size = query.page_size.unwrap_or(20);
    let days = query.days.unwrap_or(7);
    let result = device_reading_service::query_hourly_readings(
        &state, ctx.tenant_id, path.patient_id,
        &query.device_type, days, page, page_size,
    ).await?;
    Ok(axum::Json(ApiResponse::ok(result)))
}