// 贴纸与模板 API 处理器

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

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

use crate::dto::{CreateStickerPackReq, CreateStickerReq, StickerPackResp, StickerResp, TemplateResp, UpdateStickerPackReq};
use crate::service::sticker_service::StickerService;
use crate::state::DiaryState;

/// 贴纸包查询参数
#[derive(Debug, Deserialize, IntoParams)]
pub struct StickerPackQuery {
    pub category: Option<String>,
}

#[utoipa::path(
    get,
    path = "/api/v1/diary/sticker-packs",
    params(StickerPackQuery),
    responses(
        (status = 200, description = "成功", body = ApiResponse<Vec<StickerPackResp>>),
    ),
    security(("bearer_auth" = [])),
    tag = "贴纸管理"
)]
/// GET /api/v1/diary/sticker-packs
///
/// 获取贴纸包列表。需要 `diary.journal.read` 权限。
pub async fn list_sticker_packs<S>(
    State(state): State<DiaryState>,
    Extension(ctx): Extension<TenantContext>,
    Query(query): Query<StickerPackQuery>,
) -> Result<Json<ApiResponse<Vec<StickerPackResp>>>, AppError>
where
    DiaryState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "diary.journal.read")?;

    let resp = StickerService::list_sticker_packs(
        ctx.tenant_id,
        query.category,
        &state.db,
    )
    .await?;

    Ok(Json(ApiResponse::ok(resp)))
}

#[utoipa::path(
    get,
    path = "/api/v1/diary/sticker-packs/{pack_id}/stickers",
    params(("pack_id" = Uuid, Path, description = "贴纸包ID")),
    responses(
        (status = 200, description = "成功", body = ApiResponse<Vec<StickerResp>>),
        (status = 404, description = "贴纸包不存在"),
    ),
    security(("bearer_auth" = [])),
    tag = "贴纸管理"
)]
/// GET /api/v1/diary/sticker-packs/:pack_id/stickers
///
/// 获取贴纸包内的贴纸列表。需要 `diary.journal.read` 权限。
pub async fn list_stickers_in_pack<S>(
    State(state): State<DiaryState>,
    Extension(ctx): Extension<TenantContext>,
    Path(pack_id): Path<Uuid>,
) -> Result<Json<ApiResponse<Vec<StickerResp>>>, AppError>
where
    DiaryState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "diary.journal.read")?;

    let resp =
        StickerService::list_stickers_in_pack(ctx.tenant_id, pack_id, &state.db).await?;

    Ok(Json(ApiResponse::ok(resp)))
}

#[utoipa::path(
    post,
    path = "/api/v1/diary/sticker-packs",
    request_body = CreateStickerPackReq,
    responses(
        (status = 201, description = "创建成功", body = ApiResponse<StickerPackResp>),
        (status = 400, description = "验证失败"),
        (status = 401, description = "未授权"),
        (status = 403, description = "权限不足"),
    ),
    security(("bearer_auth" = [])),
    tag = "贴纸管理"
)]
/// POST /api/v1/diary/sticker-packs
///
/// 创建贴纸包。需要 `diary.class.manage` 权限（管理端）。
pub async fn create_sticker_pack<S>(
    State(state): State<DiaryState>,
    Extension(ctx): Extension<TenantContext>,
    Json(req): Json<CreateStickerPackReq>,
) -> Result<(StatusCode, Json<ApiResponse<StickerPackResp>>), AppError>
where
    DiaryState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    req.validate().map_err(|e| AppError::Validation(e.to_string()))?;
    require_permission(&ctx, "diary.class.manage")?;

    if req.name.trim().is_empty() {
        return Err(AppError::Validation("贴纸包名称不能为空".to_string()));
    }

    let resp = StickerService::create_sticker_pack(
        ctx.tenant_id,
        ctx.user_id,
        &req,
        &state.db,
    )
    .await?;

    Ok((StatusCode::CREATED, Json(ApiResponse::ok(resp))))
}

#[utoipa::path(
    put,
    path = "/api/v1/diary/sticker-packs/{pack_id}",
    params(("pack_id" = Uuid, Path, description = "贴纸包ID")),
    request_body = UpdateStickerPackReq,
    responses(
        (status = 200, description = "更新成功", body = ApiResponse<StickerPackResp>),
        (status = 400, description = "验证失败"),
        (status = 401, description = "未授权"),
        (status = 403, description = "权限不足"),
        (status = 404, description = "贴纸包不存在"),
    ),
    security(("bearer_auth" = [])),
    tag = "贴纸管理"
)]
/// PUT /api/v1/diary/sticker-packs/:pack_id
///
/// 更新贴纸包（部分更新）。需要 `diary.class.manage` 权限。
pub async fn update_sticker_pack<S>(
    State(state): State<DiaryState>,
    Extension(ctx): Extension<TenantContext>,
    Path(pack_id): Path<Uuid>,
    Json(req): Json<UpdateStickerPackReq>,
) -> Result<Json<ApiResponse<StickerPackResp>>, AppError>
where
    DiaryState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    req.validate().map_err(|e| AppError::Validation(e.to_string()))?;
    require_permission(&ctx, "diary.class.manage")?;

    if let Some(ref name) = req.name {
        if name.trim().is_empty() {
            return Err(AppError::Validation("贴纸包名称不能为空".to_string()));
        }
    }

    let resp = StickerService::update_sticker_pack(
        ctx.tenant_id,
        pack_id,
        ctx.user_id,
        &req,
        &state.db,
    )
    .await?;

    Ok(Json(ApiResponse::ok(resp)))
}

#[utoipa::path(
    delete,
    path = "/api/v1/diary/sticker-packs/{pack_id}",
    params(("pack_id" = Uuid, Path, description = "贴纸包ID")),
    responses(
        (status = 200, description = "删除成功"),
        (status = 401, description = "未授权"),
        (status = 403, description = "权限不足"),
        (status = 404, description = "贴纸包不存在"),
    ),
    security(("bearer_auth" = [])),
    tag = "贴纸管理"
)]
/// DELETE /api/v1/diary/sticker-packs/:pack_id
///
/// 删除贴纸包（软删除）。需要 `diary.class.manage` 权限。
pub async fn delete_sticker_pack<S>(
    State(state): State<DiaryState>,
    Extension(ctx): Extension<TenantContext>,
    Path(pack_id): Path<Uuid>,
) -> Result<Json<ApiResponse<()>>, AppError>
where
    DiaryState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "diary.class.manage")?;

    StickerService::delete_sticker_pack(ctx.tenant_id, pack_id, ctx.user_id, &state.db).await?;

    Ok(Json(ApiResponse::ok(())))
}

#[utoipa::path(
    post,
    path = "/api/v1/diary/sticker-packs/{pack_id}/stickers",
    params(("pack_id" = Uuid, Path, description = "贴纸包ID")),
    request_body = CreateStickerReq,
    responses(
        (status = 201, description = "创建成功", body = ApiResponse<StickerResp>),
        (status = 400, description = "验证失败"),
        (status = 401, description = "未授权"),
        (status = 403, description = "权限不足"),
        (status = 404, description = "贴纸包不存在"),
    ),
    security(("bearer_auth" = [])),
    tag = "贴纸管理"
)]
/// POST /api/v1/diary/sticker-packs/:pack_id/stickers
///
/// 在贴纸包内添加贴纸。需要 `diary.class.manage` 权限。
pub async fn create_sticker<S>(
    State(state): State<DiaryState>,
    Extension(ctx): Extension<TenantContext>,
    Path(pack_id): Path<Uuid>,
    Json(req): Json<CreateStickerReq>,
) -> Result<(StatusCode, Json<ApiResponse<StickerResp>>), AppError>
where
    DiaryState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    req.validate().map_err(|e| AppError::Validation(e.to_string()))?;
    require_permission(&ctx, "diary.class.manage")?;

    if req.name.trim().is_empty() {
        return Err(AppError::Validation("贴纸名称不能为空".to_string()));
    }

    let resp = StickerService::create_sticker(
        ctx.tenant_id,
        ctx.user_id,
        pack_id,
        &req,
        &state.db,
    )
    .await?;

    Ok((StatusCode::CREATED, Json(ApiResponse::ok(resp))))
}
#[derive(Debug, Deserialize, IntoParams)]
pub struct TemplateQuery {
    pub category: Option<String>,
}

#[utoipa::path(
    get,
    path = "/api/v1/diary/templates",
    params(TemplateQuery),
    responses(
        (status = 200, description = "成功", body = ApiResponse<Vec<TemplateResp>>),
    ),
    security(("bearer_auth" = [])),
    tag = "模板管理"
)]
/// GET /api/v1/diary/templates
///
/// 获取模板列表。需要 `diary.journal.read` 权限。
pub async fn list_templates<S>(
    State(state): State<DiaryState>,
    Extension(ctx): Extension<TenantContext>,
    Query(query): Query<TemplateQuery>,
) -> Result<Json<ApiResponse<Vec<TemplateResp>>>, AppError>
where
    DiaryState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "diary.journal.read")?;

    let resp = StickerService::list_templates(
        ctx.tenant_id,
        query.category,
        &state.db,
    )
    .await?;

    Ok(Json(ApiResponse::ok(resp)))
}

#[utoipa::path(
    get,
    path = "/api/v1/diary/templates/{template_id}",
    params(("template_id" = Uuid, Path, description = "模板ID")),
    responses(
        (status = 200, description = "成功", body = ApiResponse<TemplateResp>),
        (status = 404, description = "模板不存在"),
    ),
    security(("bearer_auth" = [])),
    tag = "模板管理"
)]
/// GET /api/v1/diary/templates/:template_id
///
/// 获取模板详情（含布局数据）。需要 `diary.journal.read` 权限。
pub async fn get_template<S>(
    State(state): State<DiaryState>,
    Extension(ctx): Extension<TenantContext>,
    Path(template_id): Path<Uuid>,
) -> Result<Json<ApiResponse<TemplateResp>>, AppError>
where
    DiaryState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "diary.journal.read")?;

    let resp =
        StickerService::get_template(ctx.tenant_id, template_id, &state.db).await?;

    Ok(Json(ApiResponse::ok(resp)))
}