ci: add changelog script

Author: voocel

.github/workflows/release.yml

@@ -22,11 +22,20 @@ jobs:
         with:
           go-version: stable
 
+      - name: Generate release notes
+        run: scripts/gen-changelog.sh > release-notes.md
+        env:
+          GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }}
+          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
+
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v7
         with:
           distribution: goreleaser
           version: "~> v2"
-          args: release --clean
+          args: >-
+            release --clean
+            ${{ hashFiles('release-notes.md') != '' && '--release-notes=release-notes.md' || '' }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.goreleaser.yml

@@ -46,11 +46,24 @@ checksum:
 
 changelog:
   sort: asc
+  groups:
+    - title: "New Features"
+      regexp: '^feat'
+    - title: "Bug Fixes"
+      regexp: '^fix'
+    - title: "Performance"
+      regexp: '^perf'
+    - title: "Refactor"
+      regexp: '^refactor'
+    - title: "Others"
+      order: 999
   filters:
     exclude:
       - "^docs:"
       - "^test:"
       - "^chore:"
+      - "^ci:"
+      - "^style:"
 
 release:
   github:

scripts/gen-changelog.sh

@@ -0,0 +1,75 @@
+#!/bin/sh
+#
+# Generate AI-summarized release notes from git commits.
+# Usage: scripts/gen-changelog.sh [previous_tag]
+#
+# Requires GEMINI_API_KEY (preferred), ANTHROPIC_API_KEY, or OPENAI_API_KEY.
+# Falls back to raw commit list if no API key is set.
+#
+set -e
+
+PREV_TAG="${1:-$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || echo "")}"
+CURR_TAG="$(git describe --tags --abbrev=0 HEAD 2>/dev/null || echo "HEAD")"
+
+if [ -n "$PREV_TAG" ]; then
+    COMMITS=$(git log "${PREV_TAG}..${CURR_TAG}" --pretty=format:"- %s" --no-merges)
+    RANGE="${PREV_TAG}..${CURR_TAG}"
+else
+    COMMITS=$(git log --pretty=format:"- %s" --no-merges -50)
+    RANGE="last 50 commits"
+fi
+
+if [ -z "$COMMITS" ]; then
+    echo "No commits found in range ${RANGE}"
+    exit 0
+fi
+
+TMPDIR=$(mktemp -d)
+trap 'rm -rf "$TMPDIR"' EXIT
+
+cat > "$TMPDIR/prompt.txt" <<PROMPT_EOF
+You are a release note writer for a Go CLI tool called 'codebot' (an AI coding agent).
+Given the following git commits, generate clean release notes in Markdown.
+
+Rules:
+- Group by: Features, Bug Fixes, Performance, Other (skip empty groups)
+- Each item: one concise line, no commit hashes, no author names
+- Remove conventional commit prefixes (feat:, fix:, etc.)
+- Merge related commits into one entry
+- Use imperative mood (Add, Fix, Update)
+- Output ONLY the markdown, no intro text
+
+Commits (${RANGE}):
+${COMMITS}
+PROMPT_EOF
+
+# Build JSON body with jq (reads from file to handle special chars).
+build_body() { jq -Rs "$1" < "$TMPDIR/prompt.txt" > "$TMPDIR/body.json"; }
+
+# Extract text from JSON response (python3 handles control chars reliably).
+extract() { python3 -c "import json,sys; d=json.load(open('$TMPDIR/result.json')); print($1)"; }
+
+# Try Gemini first, then Anthropic, then OpenAI.
+if [ -n "$GEMINI_API_KEY" ]; then
+    API_URL="${GEMINI_BASE_URL:-https://generativelanguage.googleapis.com}/v1beta/models/gemini-2.5-flash:generateContent?key=${GEMINI_API_KEY}"
+    build_body '{contents: [{parts: [{text: .}]}]}'
+    curl -fsSL "$API_URL" -H "content-type: application/json" -d @"$TMPDIR/body.json" -o "$TMPDIR/result.json"
+    extract "d['candidates'][0]['content']['parts'][0]['text']"
+
+elif [ -n "$ANTHROPIC_API_KEY" ]; then
+    API_URL="${ANTHROPIC_BASE_URL:-https://api.anthropic.com}/v1/messages"
+    build_body '{model: "claude-sonnet-4-5-20250514", max_tokens: 1024, messages: [{role: "user", content: .}]}'
+    curl -fsSL "$API_URL" -H "x-api-key: ${ANTHROPIC_API_KEY}" -H "anthropic-version: 2023-06-01" -H "content-type: application/json" -d @"$TMPDIR/body.json" -o "$TMPDIR/result.json"
+    extract "d['content'][0]['text']"
+
+elif [ -n "$OPENAI_API_KEY" ]; then
+    API_URL="${OPENAI_BASE_URL:-https://api.openai.com}/v1/chat/completions"
+    build_body '{model: "gpt-4o-mini", messages: [{role: "user", content: .}]}'
+    curl -fsSL "$API_URL" -H "Authorization: Bearer ${OPENAI_API_KEY}" -H "content-type: application/json" -d @"$TMPDIR/body.json" -o "$TMPDIR/result.json"
+    extract "d['choices'][0]['message']['content']"
+
+else
+    echo "## What's Changed"
+    echo ""
+    echo "$COMMITS"
+fi