Port some more tools to agent2 (#35973)

Release Notes:

- N/A

crates/agent2/src/tools/copy_path_tool.rs

@@ -0,0 +1,118 @@
+use crate::{AgentTool, ToolCallEventStream};
+use agent_client_protocol::ToolKind;
+use anyhow::{Context as _, Result, anyhow};
+use gpui::{App, AppContext, Entity, SharedString, Task};
+use project::Project;
+use schemars::JsonSchema;
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use util::markdown::MarkdownInlineCode;
+
+/// Copies a file or directory in the project, and returns confirmation that the
+/// copy succeeded.
+///
+/// Directory contents will be copied recursively (like `cp -r`).
+///
+/// This tool should be used when it's desirable to create a copy of a file or
+/// directory without modifying the original. It's much more efficient than
+/// doing this by separately reading and then writing the file or directory's
+/// contents, so this tool should be preferred over that approach whenever
+/// copying is the goal.
+#[derive(Debug, Serialize, Deserialize, JsonSchema)]
+pub struct CopyPathToolInput {
+    /// The source path of the file or directory to copy.
+    /// If a directory is specified, its contents will be copied recursively (like `cp -r`).
+    ///
+    /// <example>
+    /// If the project has the following files:
+    ///
+    /// - directory1/a/something.txt
+    /// - directory2/a/things.txt
+    /// - directory3/a/other.txt
+    ///
+    /// You can copy the first file by providing a source_path of "directory1/a/something.txt"
+    /// </example>
+    pub source_path: String,
+
+    /// The destination path where the file or directory should be copied to.
+    ///
+    /// <example>
+    /// To copy "directory1/a/something.txt" to "directory2/b/copy.txt",
+    /// provide a destination_path of "directory2/b/copy.txt"
+    /// </example>
+    pub destination_path: String,
+}
+
+pub struct CopyPathTool {
+    project: Entity<Project>,
+}
+
+impl CopyPathTool {
+    pub fn new(project: Entity<Project>) -> Self {
+        Self { project }
+    }
+}
+
+impl AgentTool for CopyPathTool {
+    type Input = CopyPathToolInput;
+    type Output = String;
+
+    fn name(&self) -> SharedString {
+        "copy_path".into()
+    }
+
+    fn kind(&self) -> ToolKind {
+        ToolKind::Move
+    }
+
+    fn initial_title(&self, input: Result<Self::Input, serde_json::Value>) -> ui::SharedString {
+        if let Ok(input) = input {
+            let src = MarkdownInlineCode(&input.source_path);
+            let dest = MarkdownInlineCode(&input.destination_path);
+            format!("Copy {src} to {dest}").into()
+        } else {
+            "Copy path".into()
+        }
+    }
+
+    fn run(
+        self: Arc<Self>,
+        input: Self::Input,
+        _event_stream: ToolCallEventStream,
+        cx: &mut App,
+    ) -> Task<Result<Self::Output>> {
+        let copy_task = self.project.update(cx, |project, cx| {
+            match project
+                .find_project_path(&input.source_path, cx)
+                .and_then(|project_path| project.entry_for_path(&project_path, cx))
+            {
+                Some(entity) => match project.find_project_path(&input.destination_path, cx) {
+                    Some(project_path) => {
+                        project.copy_entry(entity.id, None, project_path.path, cx)
+                    }
+                    None => Task::ready(Err(anyhow!(
+                        "Destination path {} was outside the project.",
+                        input.destination_path
+                    ))),
+                },
+                None => Task::ready(Err(anyhow!(
+                    "Source path {} was not found in the project.",
+                    input.source_path
+                ))),
+            }
+        });
+
+        cx.background_spawn(async move {
+            let _ = copy_task.await.with_context(|| {
+                format!(
+                    "Copying {} to {}",
+                    input.source_path, input.destination_path
+                )
+            })?;
+            Ok(format!(
+                "Copied {} to {}",
+                input.source_path, input.destination_path
+            ))
+        })
+    }
+}