Merge pull request #246 from mergestat/blame-cmd

feat: implement `blame` subcommand to show summary of blame info

cmd/blame.go

@@ -0,0 +1,52 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/mergestat/mergestat/cmd/blame"
+	"github.com/spf13/cobra"
+)
+
+var (
+	blameOutputJSON bool
+)
+
+func init() {
+	blameCmd.Flags().BoolVar(&blameOutputJSON, "json", false, "output as JSON")
+}
+
+var blameCmd = &cobra.Command{
+	Use:   "blame [file pattern]",
+	Short: "Print a summary of the blame context for a file",
+	Long: `Prints a summary of the blame context for all files matching the supplied path pattern in the default repo (--repo or current directory).
+Specify a file path pattern as the first argument to see aggregate blame data for all files that match the pattern.
+Use '%' to match all file paths or as a wildcard (e.g. '%.go' for all .go files). You may specify a full file path (no wildcard) as well.
+`,
+	Args: cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		pathPattern := args[0]
+
+		var ui *blame.TermUI
+		var err error
+		if ui, err = blame.NewTermUI(pathPattern); err != nil {
+			handleExitError(err)
+		}
+		defer ui.Close()
+
+		if blameOutputJSON {
+			fmt.Println(ui.PrintJSON())
+			return
+		}
+
+		// check if output is a terminal (https://rosettacode.org/wiki/Check_output_device_is_a_terminal#Go)
+		if fileInfo, _ := os.Stdout.Stat(); (fileInfo.Mode() & os.ModeCharDevice) != 0 {
+			if err := tea.NewProgram(ui).Start(); err != nil {
+				handleExitError(err)
+			}
+		} else {
+			fmt.Print(ui.PrintNoTTY())
+		}
+	},
+}