118 lines
3.0 KiB
Ruby
118 lines
3.0 KiB
Ruby
# frozen_string_literal: true
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module DiscourseAi
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module AiBot
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module Tools
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class GithubPullRequestDiff < Tool
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LARGE_OBJECT_THRESHOLD = 30_000
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def self.signature
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{
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name: name,
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description: "Retrieves the diff for a GitHub pull request",
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parameters: [
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{
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name: "repo",
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description: "The repository name in the format 'owner/repo'",
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type: "string",
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required: true,
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},
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{
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name: "pull_id",
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description: "The ID of the pull request",
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type: "integer",
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required: true,
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},
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],
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}
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end
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def self.name
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"github_pull_request_diff"
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end
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def repo
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parameters[:repo]
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end
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def pull_id
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parameters[:pull_id]
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end
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def url
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@url
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end
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def invoke(_bot_user, llm)
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api_url = "https://api.github.com/repos/#{repo}/pulls/#{pull_id}"
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@url = "https://github.com/#{repo}/pull/#{pull_id}"
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body = nil
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response_code = "unknown error"
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send_http_request(
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api_url,
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headers: {
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"Accept" => "application/vnd.github.v3.diff",
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},
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authenticate_github: true,
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) do |response|
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response_code = response.code
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body = read_response_body(response)
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end
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if response_code == "200"
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diff = body
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diff = self.class.sort_and_shorten_diff(diff)
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diff = truncate(diff, max_length: 20_000, percent_length: 0.3, llm: llm)
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{ diff: diff }
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else
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{ error: "Failed to retrieve the diff. Status code: #{response_code}" }
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end
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end
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def description_args
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{ repo: repo, pull_id: pull_id, url: url }
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end
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def self.sort_and_shorten_diff(diff, threshold: LARGE_OBJECT_THRESHOLD)
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# This regex matches the start of a new file in the diff,
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# capturing the file paths for later use.
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file_start_regex = /^diff --git.*/
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prev_start = -1
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prev_match = nil
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split = []
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diff.scan(file_start_regex) do |match|
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match_start = $~.offset(0)[0] # Get the start position of this match
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if prev_start != -1
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full_diff = diff[prev_start...match_start]
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split << [prev_match, full_diff]
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end
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prev_match = match
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prev_start = match_start
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end
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split << [prev_match, diff[prev_start..-1]] if prev_match
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split.sort! { |x, y| x[1].length <=> y[1].length }
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split
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.map do |x, y|
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if y.length < threshold
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y
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else
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"#{x}\nRedacted, Larger than #{threshold} chars"
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end
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end
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.join("\n")
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end
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end
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end
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end
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end
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