search command kind of functional

Could still benefit from a few tests and highlighting the matching characters would be nice,
but for now this could be already useful

cmd/search.go

@@ -1,22 +1,33 @@
 package cmd
 
 import (
+	"fmt"
+
 	clog "github.com/niclasvaneyk/keepac/internal/changelog"
 	"github.com/spf13/cobra"
 )
 
 // searchCmd represents the grep command
 var searchCmd = &cobra.Command{
-	Use:   "search",
-	Short: "Searches for strings in the nearest changelog and prints matches within their context",
-	Long:  ``,
+	Use:     "search [query]",
+	Aliases: []string{"grep"},
+	Short:   "Searches for strings in the nearest changelog and prints matches within their context",
+	Long:    ``,
+	Args:    cobra.ExactArgs(1),
 	RunE: func(cmd *cobra.Command, args []string) error {
 		changelog, _, err := clog.ResolveChangelog()
 		if err != nil {
 			return err
 		}
 
-		return nil
+		query := args[0]
+		result := clog.Search(changelog, query)
+
+		if result == "" {
+			fmt.Println("Nothing matched your query!")
+		}
+
+		return clog.Show(result + "\n")
 	},
 }
 

internal/changelog/search.go

@@ -3,28 +3,55 @@ package changelog
 import "strings"
 
 func Search(changelog *Changelog, query string) string {
-	matchingBounds := make([]string, 0)
+	output := make([]string, 0)
 
 	nextRelease := changelog.Releases.Next
 	if nextRelease != nil {
+		includedRelease := false
 		for _, section := range nextRelease.Sections {
+			includedSection := false
 			for _, item := range section.Items {
 				if strings.Contains(item, query) {
-					matchingBounds = append(matchingBounds, "- "+item)
+					if !includedRelease {
+						includedRelease = true
+						output = append(output, "## "+changelog.ContentWithin(&nextRelease.HeadlineBounds))
+						output = append(output, "")
+					}
+
+					if !includedSection {
+						includedSection = true
+						output = append(output, "### "+ChangeTypeLabel(section.Type))
+						output = append(output, "")
+					}
+
+					output = append(output, "- "+item)
 				}
 			}
 		}
 	}
 
 	for _, release := range changelog.Releases.Past {
+		includedRelease := false
 		for _, section := range release.Sections {
+			includedSection := false
 			for _, item := range section.Items {
 				if strings.Contains(item, query) {
-					matchingBounds = append(matchingBounds, item)
+					if !includedRelease {
+						includedRelease = true
+						output = append(output, "## "+changelog.ContentWithin(&release.HeadlineBounds))
+						output = append(output, "")
+					}
+
+					if !includedSection {
+						includedSection = true
+						output = append(output, "### "+ChangeTypeLabel(section.Type))
+						output = append(output, "")
+					}
+					output = append(output, "- "+item)
 				}
 			}
 		}
 	}
 
-	return strings.Join(matchingBounds, "\n")
+	return strings.Join(output, "\n")
 }