refactor to decouple commands form entrypoint for reusability and centralizing commands.

Increase reusability and composition

internal/commands/issues/completion.go

@@ -0,0 +1,57 @@
+package issuesCmd
+
+import (
+	"context"
+	"strings"
+
+	"github.com/LazyBachelor/LazyPM/internal/models"
+	"github.com/spf13/cobra"
+)
+
+// Variables for completion options and functions.
+var (
+	typeOptions   = []string{"bug", "feature", "task"}
+	statusOptions = []string{"open", "closed", "in_progress"}
+	priorityRange = []string{"0", "1", "2", "3", "4"}
+)
+
+// completionFunc returns a function that provides shell completion for the given options.
+func completionFunc(options []string) func(*cobra.Command, []string, string) ([]string, cobra.ShellCompDirective) {
+	return func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
+		return options, cobra.ShellCompDirectiveDefault
+	}
+}
+
+// completeIssues provides shell completion for issue IDs and titles.
+func completeIssues(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	issues, _ := GetIssueCompletions(cmd.Context(), toComplete)
+	var ids []string
+	for _, issue := range issues {
+		ids = append(ids, issue.ID)
+	}
+	return ids, cobra.ShellCompDirectiveNoFileComp
+}
+
+// GetIssueCompletions fetches issues matching the toComplete string for shell completion.
+func GetIssueCompletions(ctx context.Context, toComplete string) ([]models.Issue, cobra.ShellCompDirective) {
+	app := AppFromContext(ctx)
+	if app == nil {
+		return nil, cobra.ShellCompDirectiveNoFileComp
+	}
+
+	issues, err := app.Issues.AllIssues(ctx)
+	if err != nil {
+		return nil, cobra.ShellCompDirectiveNoFileComp
+	}
+
+	var completions []models.Issue
+	for _, issue := range issues {
+		if strings.HasPrefix(issue.ID, toComplete) {
+			completions = append(completions, issue)
+		} else if strings.HasPrefix(issue.Title, toComplete) {
+			completions = append(completions, issue)
+		}
+	}
+
+	return completions, cobra.ShellCompDirectiveNoFileComp
+}