//! E2E regression for the unified write stack (P1). Drives the REAL nomi tool
//! → `LiveKnowledge*Sink` → `KnowledgeService::write_document` chain to prove:
//!   1. the reported bug is dead — a staged write-back where the model passes
//!      the workspace-mount path lands in the review inbox mirroring the
//!      original (NOT a new nested file), with the original untouched;
//!   2. the search → read → write loop updates the original in place by handle,
//!      with zero path arithmetic and no duplicate file.

use std::sync::Arc;

use nomi_agent::knowledge_tools::{
    KnowledgeReadTool, KnowledgeRetrievalSink, KnowledgeSearchTool, KnowledgeWritebackSink, KnowledgeWriteTool, WriteMode,
};
use nomi_tools::Tool;
use serde_json::json;

/// `nomifun_realtime` ships no public no-op broadcaster, so define a local one
/// (same pattern as `knowledge_search_e2e`).
struct NoopBroadcaster;

impl nomifun_realtime::EventBroadcaster for NoopBroadcaster {
    fn broadcast(&self, _event: nomifun_api_types::WebSocketMessage<serde_json::Value>) {}
}

async fn build_service() -> (Arc<nomifun_knowledge::KnowledgeService>, tempfile::TempDir) {
    let db = nomifun_db::init_database_memory().await.expect("in-memory db");
    let repo = Arc::new(nomifun_db::SqliteKnowledgeRepository::new(db.pool().clone()));
    let tmp = tempfile::tempdir().unwrap();
    let emitter = nomifun_knowledge::KnowledgeEventEmitter::new(Arc::new(NoopBroadcaster));
    let svc = Arc::new(nomifun_knowledge::KnowledgeService::new(repo, tmp.path(), emitter));
    (svc, tmp)
}

#[tokio::test]
async fn staged_write_tool_with_mount_prefixed_path_lands_in_inbox_not_nested() {
    let (svc, _tmp) = build_service().await;
    let info = svc.create_base("领域库", "", None, None).await.unwrap();
    svc.write_file(&info.id, "terms.md", "ORIGINAL").await.unwrap();

    let sink: Arc<dyn KnowledgeWritebackSink> =
        Arc::new(nomifun_ai_agent::LiveKnowledgeWritebackSink { service: svc.clone() });
    let tool = KnowledgeWriteTool::new(
        sink,
        vec![(info.id.clone(), info.name.clone())],
        WriteMode::Staged { scope: "conv-9".into() },
        vec![info.id.clone()],
    );

    // The exact reported mistake: the model passes the workspace-mount path.
    let res = tool
        .execute(json!({
            "base": "领域库",
            "rel_path": ".nomi/knowledge/领域库/terms.md",
            "content": "PROPOSED EDIT"
        }))
        .await;
    assert!(!res.is_error, "tool errored: {}", res.content);

    // Original untouched; proposal staged under the mirrored path.
    assert_eq!(svc.read_file(&info.id, "terms.md").await.unwrap().content, "ORIGINAL");
    assert_eq!(
        svc.read_file(&info.id, "_inbox/conv-9/terms.md").await.unwrap().content,
        "PROPOSED EDIT"
    );
    // No stray nested file under the mount path.
    let files = svc.list_files(&info.id).await.unwrap();
    assert!(
        !files.iter().any(|f| f.rel_path.contains(".nomi/knowledge")),
        "must not create a nested mount-path file: {files:?}"
    );
}

#[tokio::test]
async fn search_read_write_handle_loop_updates_original_in_direct_mode() {
    let (svc, _tmp) = build_service().await;
    let info = svc.create_base("金融库", "", None, None).await.unwrap();
    svc.write_file(&info.id, "terms.md", "# 术语表\n市盈率 = PER\n").await.unwrap();

    let retrieval: Arc<dyn KnowledgeRetrievalSink> =
        Arc::new(nomifun_ai_agent::LiveKnowledgeRetrievalSink { service: svc.clone() });
    let writeback: Arc<dyn KnowledgeWritebackSink> =
        Arc::new(nomifun_ai_agent::LiveKnowledgeWritebackSink { service: svc.clone() });

    let search = KnowledgeSearchTool::new(retrieval.clone(), vec![info.id.clone()]);
    let read = KnowledgeReadTool::new(retrieval, vec![info.id.clone()]);
    let write = KnowledgeWriteTool::new(
        writeback,
        vec![(info.id.clone(), info.name.clone())],
        WriteMode::Direct,
        vec![info.id.clone()],
    );

    // 1. Search → extract the opaque handle from the rendered result.
    let s = search.execute(json!({"query": "市盈率"})).await;
    assert!(!s.is_error, "{}", s.content);
    let handle = s
        .content
        .lines()
        .find_map(|l| l.trim().strip_prefix("handle: "))
        .expect("search result must carry a handle")
        .to_owned();

    // 2. Read the full document by handle (no path arithmetic).
    let r = read.execute(json!({ "handle": handle })).await;
    assert!(!r.is_error && r.content.contains("市盈率"), "read by handle: {}", r.content);

    // 3. Update by handle in DIRECT mode → overwrites the original in place.
    let w = write
        .execute(json!({ "handle": handle, "content": "# 术语表\n市盈率 = PER\nROE = 净资产收益率\n" }))
        .await;
    assert!(!w.is_error, "write by handle: {}", w.content);

    let updated = svc.read_file(&info.id, "terms.md").await.unwrap().content;
    assert!(updated.contains("ROE"), "original must be updated in place: {updated}");
    let files = svc.list_files(&info.id).await.unwrap();
    assert_eq!(
        files.iter().filter(|f| f.rel_path.ends_with("terms.md")).count(),
        1,
        "must not create a duplicate document: {files:?}"
    );
}