use super::prompt::upsert_workspace_context;
use super::{
    apply_workspace_path_to_session, extract_workspace_path_from_tool_result,
    should_apply_workspace_update,
};
use crate::agent::core::tools::{FunctionCall, ToolCall, ToolResult};
use crate::agent::core::{Message, Session};

#[test]
fn extract_workspace_path_from_tool_result_supports_alias_name() {
    let tool_call = ToolCall {
        id: "call_1".to_string(),
        tool_type: "function".to_string(),
        function: FunctionCall {
            name: "setWorkspace".to_string(),
            arguments: "{}".to_string(),
        },
    };
    let result = ToolResult {
        success: true,
        result: r#"{"workspace":"/tmp/ws"}"#.to_string(),
        display_preference: Some("json".to_string()),
    };

    assert_eq!(
        extract_workspace_path_from_tool_result(&tool_call, &result),
        Some("/tmp/ws".to_string())
    );
}

#[test]
fn should_apply_workspace_update_when_workspace_is_missing_for_write() {
    let session = Session::new("session-1", "test-model");
    let tool_call = ToolCall {
        id: "call_1".to_string(),
        tool_type: "function".to_string(),
        function: FunctionCall {
            name: "Write".to_string(),
            arguments: r#"{"file_path":"/tmp/project/src/main.rs"}"#.to_string(),
        },
    };

    assert!(should_apply_workspace_update(&session, &tool_call));
}

#[test]
fn should_not_apply_workspace_update_when_target_is_inside_workspace() {
    let temp_dir = tempfile::tempdir().expect("create temp dir");
    let workspace = temp_dir.path().join("workspace");
    let file_path = workspace.join("src").join("main.rs");
    std::fs::create_dir_all(file_path.parent().expect("has parent"))
        .expect("create workspace dirs");
    std::fs::write(&file_path, "fn main() {}\n").expect("write test file");

    let workspace_display = crate::core::paths::path_to_display_string(&workspace);
    let file_display = crate::core::paths::path_to_display_string(&file_path);

    let mut session = Session::new("session-1", "test-model");
    session
        .metadata
        .insert("workspace_path".to_string(), workspace_display);

    let tool_call = ToolCall {
        id: "call_1".to_string(),
        tool_type: "function".to_string(),
        function: FunctionCall {
            name: "Edit".to_string(),
            arguments: serde_json::json!({ "file_path": file_display }).to_string(),
        },
    };

    assert!(!should_apply_workspace_update(&session, &tool_call));
}

#[test]
fn should_apply_workspace_update_when_target_is_outside_workspace() {
    let temp_dir = tempfile::tempdir().expect("create temp dir");
    let workspace = temp_dir.path().join("workspace");
    let external_dir = temp_dir.path().join("external");
    let notebook_path = external_dir.join("notes.ipynb");
    std::fs::create_dir_all(&workspace).expect("create workspace dir");
    std::fs::create_dir_all(&external_dir).expect("create external dir");
    std::fs::write(&notebook_path, "{}").expect("write notebook");

    let workspace_display = crate::core::paths::path_to_display_string(&workspace);
    let notebook_display = crate::core::paths::path_to_display_string(&notebook_path);

    let mut session = Session::new("session-1", "test-model");
    session
        .metadata
        .insert("workspace_path".to_string(), workspace_display);

    let tool_call = ToolCall {
        id: "call_1".to_string(),
        tool_type: "function".to_string(),
        function: FunctionCall {
            name: "NotebookEdit".to_string(),
            arguments: serde_json::json!({ "notebook_path": notebook_display }).to_string(),
        },
    };

    assert!(should_apply_workspace_update(&session, &tool_call));
}

#[test]
fn upsert_workspace_context_replaces_existing_segment() {
    let guidance = crate::server::app_state::workspace_prompt_guidance();
    let old = format!(
        "Base prompt\n\nWorkspace path: /old/path\n{}\n\n## Tool Usage Guidelines\nX",
        guidance
    );
    let updated = upsert_workspace_context(&old, "/new/path");

    assert!(updated.contains("Workspace path: /new/path"));
    assert!(!updated.contains("Workspace path: /old/path"));
    assert!(updated.contains(crate::server::app_state::WORKSPACE_CONTEXT_START_MARKER));
    assert!(updated.contains(crate::server::app_state::WORKSPACE_CONTEXT_END_MARKER));
    assert!(updated.contains("## Tool Usage Guidelines"));
}

#[test]
fn apply_workspace_path_to_session_updates_metadata_and_prompt() {
    let mut session = Session::new("session-1", "test-model");
    session.add_message(Message::system("Base prompt".to_string()));

    apply_workspace_path_to_session(&mut session, "/tmp/workspace");

    assert_eq!(
        session.metadata.get("workspace_path"),
        Some(&"/tmp/workspace".to_string())
    );
    let system_content = session
        .messages
        .iter()
        .find(|message| matches!(message.role, crate::agent::core::Role::System))
        .map(|message| message.content.clone())
        .unwrap_or_default();
    assert!(system_content.contains("Workspace path: /tmp/workspace"));
    assert!(system_content.contains(crate::server::app_state::WORKSPACE_CONTEXT_START_MARKER));
    assert!(system_content.contains(crate::server::app_state::WORKSPACE_CONTEXT_END_MARKER));
}
