improved chapter extract regex

now also Support this
⭐️Time Stamps⭐️
#1   (00:00:00) CSS tutorial for beginners 🎨
#2   (00:11:00) fonts 🆒
#3   (00:14:20) borders 🔲
#4   (00:16:56) background 🌆
#5   (00:20:52) margins 📏
#6   (00:25:44) float 🎈
#7   (00:29:01) position 🎯
#8   (00:34:58) pseudo classes 👨‍👧‍👦
#9   (00:40:47) shadows 👥
#10 (00:43:43) icons 🏠
#11 (00:46:45) transform 🔄
#12 (00:50:54) animation 🎞️

cmd/version.go

@@ -10,7 +10,7 @@ func NewVersion() *cobra.Command {
 		Use:   "version",
 		Short: "Check the version info",
 		RunE: func(cmd *cobra.Command, args []string) error {
-			cmd.Printf("- YT Drop %s\n", "1.0.6")
+			cmd.Printf("- YT Drop %s\n", "1.0.9")
 			cmd.Printf("- os/type: %s\n", runtime.GOOS)
 			cmd.Printf("- os/arch: %s\n", runtime.GOARCH)
 			cmd.Printf("- go/version: %s\n", runtime.Version())

pkg/FFMpeg/ffmpeg.go

@@ -3,11 +3,11 @@ package FFMpeg
 import (
 	"fmt"
 	"regexp"
+	"sort"
 	"strconv"
 	"strings"
 )
 
-// Chapter represents a video chapter
 type Chapter struct {
 	StartTime int64
 	EndTime   int64
@@ -39,7 +39,8 @@ func parseTime(timeStr string) (int64, error) {
 
 // ExtractChapters parses the input text and returns a slice of Chapter structs
 func ExtractChapters(text string, videoDuration int64) ([]Chapter, error) {
-	pattern := regexp.MustCompile(`(?m)^\s*[^\w\n]*\(?(\d{1,2}:\d{2}(?::\d{2})?)\)?\s*[^\w\n]*\s*(.+)$`)
+	//pattern := regexp.MustCompile(`(?m)^\s*[^\w\n]*\(?(\d{1,2}:\d{2}(?::\d{2})?)\)?\s*[^\w\n]*\s*(.+)$`)
+	pattern := regexp.MustCompile(`(?m)^\s*#?\d*\s*[^\w\n]*\(?(\d{1,2}:\d{2}(?::\d{2})?)\)?\s*[^\w\n]*\s*(.+)$`)
 	matches := pattern.FindAllStringSubmatch(text, -1)
 
 	var chapters []Chapter
@@ -58,13 +59,17 @@ func ExtractChapters(text string, videoDuration int64) ([]Chapter, error) {
 		})
 	}
 
-	// Validate chapter order and assign end times
+	sort.Slice(chapters, func(i, j int) bool {
+		return chapters[i].StartTime < chapters[j].StartTime
+	})
+
+	// Validate chapter order and assign end times, exclude the last element
 	for i := 0; i < len(chapters)-1; i++ {
 		current := &chapters[i]
 		next := &chapters[i+1]
 
 		if next.StartTime < current.StartTime {
-			return nil, fmt.Errorf("invalid chapter timing: chapter %d starts at %dms but previous chapter ends at %dms", i+1, next.StartTime, current.StartTime)
+			return nil, fmt.Errorf("invalid chapter timing: chapter %d : %s starts at %dms but previous chapter ends at %dms", i+1, next.Title, next.StartTime, current.StartTime)
 		} else if next.StartTime == current.StartTime {
 			current.EndTime = next.StartTime
 		} else {

pkg/FFMpeg/ffmpeg_test.go

@@ -36,6 +36,133 @@ func TestExtractChapters2(t *testing.T) {
 (2:09:17) Using useFetcher hook for form submission 
 (2:11:08) Throwing errors in Remix
 (2:15:41) Closing thought and where to find hel`
+
+	videoDuration := int64(301043230) // Example video duration in milliseconds
+
+	chapters, err := ExtractChapters(text, videoDuration)
+	if err != nil {
+		t.Errorf("error: %s", err)
+	}
+
+	// Print chapters to verify output
+	for _, chapter := range chapters {
+		fmt.Printf("Start: %dms, End: %dms, Title: %s\n", chapter.StartTime, chapter.EndTime, chapter.Title)
+	}
+}
+
+func TestExtractChapters3(t *testing.T) {
+	test2 := `⭐️ Contents ⭐️
+#1   (00:00:00) CSS tutorial for beginners 🎨
+#2   (00:11:00) fonts 🆒
+#3   (00:14:20) borders 🔲
+#4   (00:16:56) background 🌆
+#5   (00:20:52) margins 📏
+#6   (00:25:44) float 🎈
+#7   (00:29:01) position 🎯
+#8   (00:34:58) pseudo classes 👨‍👧‍👦
+#9   (00:40:47) shadows 👥
+#10 (00:43:43) icons 🏠
+#11 (00:46:45) transform 🔄
+#12 (00:50:54) animation 🎞️`
+	videoDuration := int64(301043230) // Example video duration in milliseconds
+
+	chapters, err := ExtractChapters(test2, videoDuration)
+	if err != nil {
+		t.Errorf("error: %s", err)
+	}
+
+	// Print chapters to verify output
+	for _, chapter := range chapters {
+		fmt.Printf("Start: %dms, End: %dms, Title: %s\n", chapter.StartTime, chapter.EndTime, chapter.Title)
+	}
+}
+
+func TestExtractChaptersInError(t *testing.T) {
+	text := `✏️ Course developed by Andrew Brown of ExamPro.  ‪@ExamProChannel‬ 
+⭐️ Contents ⭐️
+0:00:00 Introduction
+0:34:47 Setup
+0:52:38 Amazon S3
+10:52:02 AWS API
+12:19:52 VPC
+0:34:47 Setup22222222222222
+17:33:42 IAM
+19:14:03 EC2
+21:13:27 AMIs
+21:37:10 ASG
+21:50:14 ELB
+21:57:20 Route53
+22:19:29 AWS Global Accelerator
+22:21:00 CloudFront
+22:30:24 EBS
+22:45:34 EFS
+22:50:38 FSx
+22:54:24 AWS Backup
+22:56:29 AWS Snow Family
+23:07:07 AWS Transfer Family
+23:09:31 AWS Migration Hub
+23:15:35 AWS Data Sync
+23:24:17 DMS
+23:59:42 AWS Auto Scaling
+24:16:59 AWS Amplify
+24:37:15 Amazon AppFlow
+24:53:39 AppSync
+25:18:48 AWS Batch
+25:46:37 OpenSearch Service
+26:09:43 Device Farm
+26:22:11 QLDB
+26:24:01 Elastic Transcoder
+26:52:21 AWS MediaConvert
+27:02:09 SNS
+27:43:05 SQS
+28:44:00 Amazon MQ
+29:32:34 Service Catalog
+29:40:04 CloudWatch and EventBridge
+30:16:36 Lambda
+31:49:51 AWS Step Functions
+32:48:57 AWS Compute Optimizer
+32:59:19 Elastic Beanstalk
+34:32:38 Kinesis
+34:59:52 ElastiCache
+35:51:13 MemoryDB
+36:21:52 CloudTrail
+37:19:23 Redshift
+37:37:50 Athena
+37:53:46 ML Managed Services
+40:43:04 AWS Data Exchange
+40:47:11 AWS Glue
+41:27:04 Lake Formation
+41:29:41 API Gateway
+41:44:09 RDS
+42:56:19 Aurora
+19:33:29 DocumentDB
+44:29:11 DynamoDB
+21:10:04 Amazon Keyspaces
+45:17:30 Neptune
+45:35:00 ECR
+45:39:18 ECS
+46:02:27 EKS Cloud
+46:21:45 KMS
+46:32:00 AWS Audit Manager
+46:40:23 ACM
+46:58:57 Cognito
+47:08:33 Amazon Detective
+47:16:42 AWS Directory Service
+47:22:47 AWS Firewall Manager
+47:29:18 AWS Inspector
+47:39:57 Amazon Macie
+47:49:00 AWS Security Hub
+47:53:37 AWS Secrets Manager
+48:35:40 AI Dev Tools
+48:59:17 Amazon MSK
+49:29:32 AWS Shield
+49:33:29 AWS WAF
+49:37:48 CloudHSM
+49:41:59 AWS Guard Duty
+49:46:10 Health Dashboards
+49:47:42 AWS Artifact
+49:50:33 Storage Gateway
+50:10:55 EC2 Pricing Models`
 	videoDuration := int64(301043230) // Example video duration in milliseconds
 
 	chapters, err := ExtractChapters(text, videoDuration)