Initial commit

scripts/run-review.sh

@@ -0,0 +1,95 @@
+#!/usr/bin/env bash
+# Required env vars: AI_API_URL, AI_API_KEY, AI_MODEL, PR_TITLE, PR_BODY
+# Optional env vars: PREV_REVIEW, INCREMENTAL
+# Reads: pr.diff, prompts/review.md (or prompts/review-update.md for incremental)
+# Writes: $GITHUB_OUTPUT (review)
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROMPTS_DIR="${SCRIPT_DIR}/../prompts"
+
+DIFF=$(cat pr.diff)
+echo "Diff size: $(wc -c < pr.diff) bytes"
+
+if [ "${INCREMENTAL:-false}" = "true" ] && [ -n "${PREV_REVIEW:-}" ]; then
+  echo "Building incremental review with conversation history"
+  SYSTEM_PROMPT=$(cat "${PROMPTS_DIR}/review-update.md")
+
+  # Reconstruct conversation: the model previously reviewed an earlier state,
+  # now we show it only what changed since then.
+  MESSAGES=$(jq -n \
+    --arg system "$SYSTEM_PROMPT" \
+    --arg prev "$PREV_REVIEW" \
+    --arg title "$PR_TITLE" \
+    --arg body "$PR_BODY" \
+    --arg diff "$DIFF" \
+    '[
+      { role: "system", content: $system },
+      { role: "assistant", content: $prev },
+      { role: "user", content: ("The PR has been updated. Here are the new changes since your last review.\n\nPR Title: " + $title + "\nPR Description: " + $body + "\n\nIncremental diff:\n```diff\n" + $diff + "\n```\n\nUpdate your review, keeping previous feedback relevant to unchanged code and focusing new commentary on what has changed.") }
+    ]')
+else
+  echo "Building full review"
+  SYSTEM_PROMPT=$(cat "${PROMPTS_DIR}/review.md")
+
+  MESSAGES=$(jq -n \
+    --arg system "$SYSTEM_PROMPT" \
+    --arg title "$PR_TITLE" \
+    --arg body "$PR_BODY" \
+    --arg diff "$DIFF" \
+    '[
+      { role: "system", content: $system },
+      { role: "user", content: ("PR Title: " + $title + "\nPR Description: " + $body + "\n\nDiff:\n```diff\n" + $diff + "\n```") }
+    ]')
+fi
+
+PAYLOAD=$(jq -n \
+  --arg model "$AI_MODEL" \
+  --argjson messages "$MESSAGES" \
+  '{
+    model: $model,
+    messages: $messages,
+    max_tokens: 1024,
+    temperature: 0.2
+  }')
+
+echo "Payload size: $(echo "$PAYLOAD" | wc -c) bytes"
+echo "Calling endpoint: ${AI_API_URL%/}/chat/completions"
+echo "Model: ${AI_MODEL}"
+
+HTTP_RESPONSE=$(curl -s \
+  --max-time 120 \
+  -w "\n__HTTP_STATUS__:%{http_code}" \
+  -H "Authorization: Bearer ${AI_API_KEY}" \
+  -H "Content-Type: application/json" \
+  -d "$PAYLOAD" \
+  "${AI_API_URL%/}/chat/completions")
+CURL_EXIT=$?
+
+HTTP_STATUS=$(echo "$HTTP_RESPONSE" | grep '__HTTP_STATUS__:' | cut -d: -f2)
+RESPONSE_BODY=$(echo "$HTTP_RESPONSE" | sed '/__HTTP_STATUS__:/d')
+
+echo "curl exit code: ${CURL_EXIT}"
+echo "HTTP status: ${HTTP_STATUS}"
+echo "Response body: ${RESPONSE_BODY}"
+
+if [ "$CURL_EXIT" -ne 0 ]; then
+  echo "::error::curl failed with exit code ${CURL_EXIT}"
+  exit 1
+fi
+
+if [ "$HTTP_STATUS" -lt 200 ] || [ "$HTTP_STATUS" -ge 300 ]; then
+  echo "::error::API returned HTTP ${HTTP_STATUS}: ${RESPONSE_BODY}"
+  exit 1
+fi
+
+REVIEW=$(echo "$RESPONSE_BODY" | jq -r '.choices[0].message.content')
+if [ -z "$REVIEW" ] || [ "$REVIEW" = "null" ]; then
+  echo "::error::Failed to extract review from response. Full body: ${RESPONSE_BODY}"
+  exit 1
+fi
+
+echo "Review length: $(echo "$REVIEW" | wc -c) chars"
+echo "review<<EOF" >> "$GITHUB_OUTPUT"
+echo "$REVIEW" >> "$GITHUB_OUTPUT"
+echo "EOF" >> "$GITHUB_OUTPUT"