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::follow_up_template_dto::*;
use crate::dto::DeleteWithVersion;
use crate::service::follow_up_template_service;
use crate::state::HealthState;

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

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

pub async fn list_templates<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Query(params): Query<FollowUpTemplateListParams>,
) -> Result<Json<ApiResponse<PaginatedResponse<FollowUpTemplateListItemResp>>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.follow-up-template.list")?;
    let page = params.page.unwrap_or(1);
    let page_size = params.page_size.unwrap_or(20);
    let result = follow_up_template_service::list_templates(
        &state, ctx.tenant_id, page, page_size, params.follow_up_type, params.status,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn get_template<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(id): Path<Uuid>,
) -> Result<Json<ApiResponse<FollowUpTemplateResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.follow-up-template.list")?;
    let result = follow_up_template_service::get_template(&state, ctx.tenant_id, id).await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn create_template<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Json(req): Json<CreateFollowUpTemplateReq>,
) -> Result<Json<ApiResponse<FollowUpTemplateResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.follow-up-template.manage")?;
    let mut req = req;
    req.sanitize();
    let result = follow_up_template_service::create_template(
        &state, ctx.tenant_id, Some(ctx.user_id), req,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

pub async fn update_template<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Path(id): Path<Uuid>,
    Json(req): Json<UpdateFollowUpTemplateWithVersion>,
) -> Result<Json<ApiResponse<FollowUpTemplateResp>>, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.follow-up-template.manage")?;
    let mut data = req.data;
    data.sanitize();
    let result = follow_up_template_service::update_template(
        &state, ctx.tenant_id, id, Some(ctx.user_id), data, req.version,
    )
    .await?;
    Ok(Json(ApiResponse::ok(result)))
}

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