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fnord
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AI code archaeology
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lib/ai/tools/commit/search.ex
defmodule AI.Tools.Commit.Search do
@behaviour AI.Tools
@max_search_results 25
@impl AI.Tools
def async?, do: true
@impl AI.Tools
def is_available?(), do: AI.Tools.has_indexed_project()
@impl AI.Tools
def ui_note_on_request(args), do: {"Commit search", args["query"]}
@impl AI.Tools
def ui_note_on_result(%{"query" => query}, result) do
re = ~r/Commit search found (\d+) matching commits in (\d+) ms:/
case Regex.run(re, result) do
[_, count_str, took_ms] ->
count = String.to_integer(count_str)
{"Commit search", "#{query} -> #{count} commit matches in #{took_ms} ms"}
_ ->
{"Commit search", "#{query} -> #{result}"}
end
end
@impl AI.Tools
def tool_call_failure_message(_args, _reason), do: :default
@impl AI.Tools
def read_args(%{"query" => query} = args) do
limit = Map.get(args, "limit", @max_search_results)
{:ok,
%{
"query" => query,
"limit" => normalize_limit(limit)
}}
end
def read_args(_), do: AI.Tools.required_arg_error("query")
@impl AI.Tools
def spec() do
%{
type: "function",
function: %{
name: "commit_search_tool",
description: "Semantic search over indexed git commits.",
parameters: %{
additionalProperties: false,
type: "object",
required: ["query"],
properties: %{
query: %{
type: "string",
description: "Natural language query to match against commit embeddings."
},
limit: %{
type: "integer",
description:
"Maximum number of results to return (default: #{@max_search_results}).",
minimum: 1,
maximum: 100
}
}
}
}
}
end
@impl AI.Tools
def call(%{"query" => query, "limit" => limit}) do
start_time = DateTime.utc_now()
with {:ok, matches} <- do_search(query, limit),
took_ms = DateTime.diff(DateTime.utc_now(), start_time, :millisecond),
{:ok, index_state_msg} <- index_state() do
{:ok, build_response(matches, took_ms, index_state_msg)}
end
end
# --- internals ---
defp normalize_limit(limit) when is_integer(limit) and limit > 0 and limit <= 100, do: limit
defp normalize_limit(_), do: @max_search_results
defp build_response(matches, took_ms, index_state_msg) do
header = "[commit_search_tool]"
body =
matches
|> Enum.map(&format_entry/1)
|> Enum.join("\n-----\n")
|> then(fn body ->
"""
Commit search found #{length(matches)} matching commits in #{took_ms} ms:
-----
#{body}
"""
end)
[header, body, "-----", index_state_msg]
|> Enum.join("\n")
end
defp format_entry({sha, score, metadata}) do
subject = Map.get(metadata, "subject") || "(no subject)"
author = Map.get(metadata, "author") || "(unknown)"
time = Map.get(metadata, "committed_at") || ""
"""
# #{sha} (cosine similarity: #{score})
- subject: #{subject}
- author: #{author}
- committed_at: #{time}
"""
end
defp index_state() do
with {:ok, project} <- Store.get_project() do
%{new: new, stale: stale, deleted: deleted} =
Store.Project.CommitIndex.index_status(project)
msg = """
The results of this search may be affected by the state of the commit index.
The current commit index state is:
- New commits (not yet embedded): #{length(new)}
- Stale commits (outdated index): #{length(stale)}
- Deleted commits (indexed but missing from repo): #{length(deleted)}
If you are seeing unexpected search results, re-run `fnord index`.
"""
{:ok, msg}
end
end
defp do_search(query, limit) do
%{"query" => query, "limit" => limit}
|> Search.Commits.new()
|> Search.Commits.get_results()
end
end