Support last-modified

Signed-off-by: Galo Navarro <anglorvaroa@gmail.com>

.github/labeler.yml

@@ -1,6 +1,18 @@
 version: 1
 
 labels:
+    # Type: Recent changes
+    -   label: "@type/new"
+        last-modified: 1d
+
+    # Type: Old changes
+    -   label: "@type/old"
+        last-modified: 30d
+
+    # Type: Build-related changes
+    -   label: "@type/recently-changed"
+        last-modified: 1d
+
     # Type: Build-related changes
     -   label: "@type/build"
         title: '^build(?:\(.+\))?\!?:'

README.md

@@ -309,6 +309,9 @@ alphabetical order. Some important considerations:
 This condition is satisfied when the age of the PR or Issue are larger than
 the given one. The age is calculated from the creation date.
 
+If you're looking to evaluate on the modification date of the issue or PR, 
+check on <a href="#last-modified" ></a>
+
 This condition is best used when with a <a href="#schedule">schedule trigger</a>.
 
 Example:
@@ -407,6 +410,35 @@ regular expressions (Regex). Special characters need to be escaped with double
 backslashes. This is because the backslash in Go strings is an escape character
 and therefore must be escaped itself to appear as a literal in the regex.
 
+### Last Modified (PRs and Issues) <a name="last-modified" />
+
+This condition is satisfied when the modification date of the PR or Issue is
+larger than the given one. 
+
+If you're looking to evaluate on the creation date of the issue or PR, 
+check on <a href="#age" ></a>
+
+This condition is best used when with a <a href="#schedule">schedule trigger</a>.
+
+Example:
+
+```yaml
+last-modified: 1d
+```
+
+Will label PRs that were last modified one or more days ago.
+
+The syntax for values is based on a number, followed by a suffix:
+
+* s: seconds
+* m: minutes
+* h: hours
+* d: days
+* w: weeks
+* y: years
+
+For example, `2d` means 2 days, `4w` means 4 weeks, and so on.
+
 ### Mergeable status (PRs only) <a name="mergeable" />
 
 This condition is satisfied when the [mergeable

pkg/condition_age.go

@@ -2,8 +2,6 @@ package labeler
 
 import (
 	"fmt"
-	"strconv"
-	"strings"
 	"time"
 )
 
@@ -36,26 +34,3 @@ func AgeCondition(l *Labeler) Condition {
 		},
 	}
 }
-
-func parseExtendedDuration(s string) (time.Duration, error) {
-	multiplier := time.Hour * 24 // default to days
-
-	if strings.HasSuffix(s, "w") {
-		multiplier = time.Hour * 24 * 7 // weeks
-		s = strings.TrimSuffix(s, "w")
-	} else if strings.HasSuffix(s, "y") {
-		multiplier = time.Hour * 24 * 365 // years
-		s = strings.TrimSuffix(s, "y")
-	} else if strings.HasSuffix(s, "d") {
-		s = strings.TrimSuffix(s, "d") // days
-	} else {
-		return time.ParseDuration(s) // default to time.ParseDuration for hours, minutes, seconds
-	}
-
-	value, err := strconv.Atoi(s)
-	if err != nil {
-		return 0, err
-	}
-
-	return time.Duration(value) * multiplier, nil
-}

pkg/condition_last_modified.go

@@ -0,0 +1,34 @@
+package labeler
+
+import (
+	"fmt"
+	"time"
+)
+
+func LastModifiedCondition(l *Labeler) Condition {
+	return Condition{
+		GetName: func() string {
+			return "Last modification of issue/PR"
+		},
+		CanEvaluate: func(target *Target) bool {
+			return target.ghIssue != nil || target.ghPR != nil
+		},
+		Evaluate: func(target *Target, matcher LabelMatcher) (bool, error) {
+			// Parse the age from the configuration
+			threshold, err := parseExtendedDuration(matcher.LastModified)
+			if err != nil {
+				return false, fmt.Errorf("failed to parse last-modified parameter in configuration: %v", err)
+			}
+
+			// Determine the last modification time of the issue or PR
+			var lastModified time.Time
+			if target.ghIssue != nil {
+				lastModified = target.ghIssue.UpdatedAt.Time
+			} else if target.ghPR != nil {
+				lastModified = target.ghPR.UpdatedAt.Time
+			}
+
+			return time.Since(lastModified) > threshold, nil
+		},
+	}
+}

pkg/labeler.go

@@ -23,6 +23,7 @@ type LabelMatcher struct {
 	Draft          string
 	Files          []string
 	Label          string
+	LastModified   string `yaml:"last-modified"`
 	Mergeable      string
 	Negate         bool
 	Size           *SizeConfig
@@ -223,6 +224,7 @@ func (l *Labeler) findMatches(target *Target, config *LabelerConfigV1) (LabelUpd
 		BodyCondition(),
 		BranchCondition(),
 		FilesCondition(l),
+		LastModifiedCondition(l),
 		IsDraftCondition(),
 		IsMergeableCondition(),
 		SizeCondition(l),

pkg/util.go

@@ -0,0 +1,30 @@
+package labeler
+
+import (
+	"strconv"
+	"strings"
+	"time"
+)
+
+func parseExtendedDuration(s string) (time.Duration, error) {
+	multiplier := time.Hour * 24 // default to days
+
+	if strings.HasSuffix(s, "w") {
+		multiplier = time.Hour * 24 * 7 // weeks
+		s = strings.TrimSuffix(s, "w")
+	} else if strings.HasSuffix(s, "y") {
+		multiplier = time.Hour * 24 * 365 // years
+		s = strings.TrimSuffix(s, "y")
+	} else if strings.HasSuffix(s, "d") {
+		s = strings.TrimSuffix(s, "d") // days
+	} else {
+		return time.ParseDuration(s) // default to time.ParseDuration for hours, minutes, seconds
+	}
+
+	value, err := strconv.Atoi(s)
+	if err != nil {
+		return 0, err
+	}
+
+	return time.Duration(value) * multiplier, nil
+}