//! 组织树 API
//!
//! 两个独立接口：
//! 1. /api/organization-tree — 只返回组织->项目树（不含设备）
//! 2. /api/cabinets/filter — 根据组织/项目筛选设备列表

use axum::extract::{State, Query};
use axum::Json;
use serde::Deserialize;
use serde_json::{json, Value};

use super::organizations::{CabinetRow, OrganizationRow, ProjectRow, TreeNode};
use crate::error::AppError;
use crate::middleware::auth::{self, CurrentUser};
use crate::commands::AppState;

/// 组织树接口 — 只返回组织->项目（不含设备）
pub async fn organization_tree(
    user: CurrentUser,
    State(state): State<AppState>,
) -> Result<Json<Value>, AppError> {
    auth::check_permission(&user, "device:view")?;

    let db = &state.mysql;

    // 根据角色过滤组织
    let orgs: Vec<OrganizationRow> = if user.role_level >= 2 {
        sqlx::query_as("SELECT id, name FROM organizations ORDER BY id")
            .fetch_all(db)
            .await?
    } else if let Some(org_id) = user.organization_id {
        sqlx::query_as("SELECT id, name FROM organizations WHERE id = ? ORDER BY id")
            .bind(org_id)
            .fetch_all(db)
            .await?
    } else {
        return Ok(Json(json!([])));
    };

    // 获取所有项目
    let projects: Vec<ProjectRow> = sqlx::query_as(
        "SELECT id, organization_id, name FROM projects ORDER BY id"
    )
    .fetch_all(db)
    .await?;

    // 构建树（只到项目节点）
    let tree: Vec<TreeNode> = orgs
        .into_iter()
        .map(|org| {
            let org_projects: Vec<ProjectRow> = projects
                .iter()
                .filter(|p| p.organization_id == Some(org.id))
                .cloned()
                .collect();

            let children: Vec<TreeNode> = org_projects
                .into_iter()
                .map(|proj| TreeNode {
                    id: proj.id,
                    name: proj.name,
                    children: None,
                    abstract_id: None,
                    imei: None,
                    status: None,
                })
                .collect();

            TreeNode {
                id: org.id,
                name: org.name,
                children: Some(children),
                abstract_id: None,
                imei: None,
                status: None,
            }
        })
        .collect();

    Ok(Json(json!(tree)))
}

/// 设备列表筛选参数
#[derive(Deserialize)]
pub struct CabinetFilterParams {
    pub organization_id: Option<i64>,
    pub project_id: Option<i64>,
}

/// 设备列表接口 — 根据组织/项目筛选
pub async fn filter_cabinets(
    user: CurrentUser,
    State(state): State<AppState>,
    Query(params): Query<CabinetFilterParams>,
) -> Result<Json<Value>, AppError> {
    auth::check_permission(&user, "device:view")?;

    let db = &state.mysql;

    let rows = if let Some(proj_id) = params.project_id {
        // 按项目筛选
        sqlx::query_as::<_, CabinetRow>(
            "SELECT id, project_id, abstract_id, imei, iccid, name, address, status 
             FROM cabinets WHERE project_id = ? ORDER BY id"
        )
        .bind(proj_id)
        .fetch_all(db)
        .await?
    } else if let Some(org_id) = params.organization_id {
        // 按组织筛选（通过项目关联）
        sqlx::query_as::<_, CabinetRow>(
            "SELECT c.id, c.project_id, c.abstract_id, c.imei, c.iccid, c.name, c.address, c.status 
             FROM cabinets c 
             JOIN projects p ON c.project_id = p.id 
             WHERE p.organization_id = ? ORDER BY c.id"
        )
        .bind(org_id)
        .fetch_all(db)
        .await?
    } else if user.role_level >= 2 {
        // 总管理员看所有
        sqlx::query_as::<_, CabinetRow>(
            "SELECT id, project_id, abstract_id, imei, iccid, name, address, status 
             FROM cabinets ORDER BY id"
        )
        .fetch_all(db)
        .await?
    } else if let Some(org_id) = user.organization_id {
        // 企业管理员只看本组织
        sqlx::query_as::<_, CabinetRow>(
            "SELECT c.id, c.project_id, c.abstract_id, c.imei, c.iccid, c.name, c.address, c.status 
             FROM cabinets c 
             JOIN projects p ON c.project_id = p.id 
             WHERE p.organization_id = ? ORDER BY c.id"
        )
        .bind(org_id)
        .fetch_all(db)
        .await?
    } else {
        vec![]
    };

    Ok(Json(json!(rows)))
}