feat(changelog): Implement changelog generate tool (#76)

* feat(changelog): implement changelog generate tool.

* add type.

go.mod

@@ -0,0 +1,3 @@
+module github.com/openimsdk/actions-test
+
+go 1.23.2

tools/changelog-test.md

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+# Changelogs
+
+### New Features
+* feat: Update version to v0.0.19 [#30](https://github.com/openimsdk/actions-test/pull/30)
+* feat: Update 66666 [#66](https://github.com/openimsdk/actions-test/pull/66)
+
+### Bug Fixes
+* fix: swm [#34](https://github.com/openimsdk/actions-test/pull/34)
+
+### Chores
+* chore: rm [#51](https://github.com/openimsdk/actions-test/pull/51)
+
+### Others
+* Update version to v0.0.21 [#32](https://github.com/openimsdk/actions-test/pull/32)
+* T1 [#35](https://github.com/openimsdk/actions-test/pull/35)
+* update teset [#36](https://github.com/openimsdk/actions-test/pull/36)
+* hello [#39](https://github.com/openimsdk/actions-test/pull/39)
+* 21321 [#53](https://github.com/openimsdk/actions-test/pull/53)
+* 1x [#54](https://github.com/openimsdk/actions-test/pull/54)
+* Update CHANGELOG for release v0.0.34 [#74](https://github.com/openimsdk/actions-test/pull/74)
+
+

tools/main.go

@@ -0,0 +1,85 @@
+package main
+
+import (
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+// Function to classify and format release notes
+func classifyReleaseNotes(body string) map[string][]string {
+	result := map[string][]string{
+		"feat":  {},
+		"fix":   {},
+		"chore": {},
+		"other": {},
+	}
+
+	// Regular expression to extract PR number and URL
+	rePR := regexp.MustCompile(`https://github\.com/[^\s]+/pull/(\d+)`)
+
+	// Split the body into individual lines
+	lines := strings.Split(body, "\n")
+
+	for _, line := range lines {
+		if strings.HasPrefix(line, "*") {
+			var category string
+
+			// Determine the category based on the prefix
+			if strings.HasPrefix(line, "* feat") {
+				category = "feat"
+			} else if strings.HasPrefix(line, "* fix") {
+				category = "fix"
+			} else if strings.HasPrefix(line, "* chore") {
+				category = "chore"
+			} else {
+				category = "other"
+			}
+
+			// Extract PR number and URL
+			matches := rePR.FindStringSubmatch(line)
+			if len(matches) == 2 {
+				prURL := matches[0]
+				prNumber := matches[1]
+				// Format the line with the PR link
+				formattedLine := fmt.Sprintf("* %s [#%s](%s)", strings.Split(line, " by ")[0][2:], prNumber, prURL)
+				result[category] = append(result[category], formattedLine)
+			} else {
+				// If no PR link is found, just add the line as is
+				result[category] = append(result[category], line)
+			}
+		}
+	}
+
+	return result
+}
+
+// Function to generate the final changelog
+func generateChangelog(body string) string {
+	sections := classifyReleaseNotes(body)
+
+	changelog := "# Changelogs\n\n"
+	if len(sections["feat"]) > 0 {
+		changelog += "### New Features\n" + strings.Join(sections["feat"], "\n") + "\n\n"
+	}
+	if len(sections["fix"]) > 0 {
+		changelog += "### Bug Fixes\n" + strings.Join(sections["fix"], "\n") + "\n\n"
+	}
+	if len(sections["chore"]) > 0 {
+		changelog += "### Chores\n" + strings.Join(sections["chore"], "\n") + "\n\n"
+	}
+	if len(sections["other"]) > 0 {
+		changelog += "### Others\n" + strings.Join(sections["other"], "\n") + "\n\n"
+	}
+
+	return changelog
+}
+
+func main() {
+	// Example release notes content
+	body := "## What's Changed\r\n* feat(test): Update version to v0.0.19 by @github-actions in https://github.com/openimsdk/actions-test/pull/30\r\n* Update version to v0.0.21 by @github-actions in https://github.com/openimsdk/actions-test/pull/32\r\n* fix: swm by @mo3et in https://github.com/openimsdk/actions-test/pull/34\r\n* feat: Update 66666 by @github-actions in https://github.com/openimsdk/actions-test/pull/66\r\n* T1 by @mo3et in https://github.com/openimsdk/actions-test/pull/35\r\n* update teset by @mo3et in https://github.com/openimsdk/actions-test/pull/36\r\n* hello by @mo3et in https://github.com/openimsdk/actions-test/pull/39\r\n* chore: rm by @mo3et in https://github.com/openimsdk/actions-test/pull/51\r\n* 21321 by @mo3et in https://github.com/openimsdk/actions-test/pull/53\r\n* 1x by @mo3et in https://github.com/openimsdk/actions-test/pull/54\r\n* Update CHANGELOG for release v0.0.34 by @github-actions in https://github.com/openimsdk/actions-test/pull/74"
+
+	// Generate and print the formatted changelog
+	changelog := generateChangelog(body)
+	fmt.Println(changelog)
+}