use real terminal width to determine markdown width in 'api show'

pkg/es/api.go

@@ -41,9 +41,12 @@ import (
 	"github.com/charmbracelet/lipgloss"
 	"github.com/chzyer/readline"
 	"github.com/go-openapi/spec"
+	"golang.org/x/term"
 )
 
-const intro = `Input format: verb path [data]"
+const (
+	DefaultMargin = 4
+	intro         = `Input format: verb path [data]"
 
 Example:
 
@@ -59,6 +62,7 @@ put /yourindex/_settings
 
 If you do NOT  supply a JSON in the first line, you  need to hit ENTER
 twice to complete.`
+)
 
 // holds an API operation via go-openapi/spec
 type Op struct {
@@ -313,18 +317,19 @@ func ApiShow(conf *cfg.Config, showpath, verb string) error {
 
 	cleanMarkup := regexp.MustCompile(`<[^<>]+>`)
 
-	params := getApiParameters(op, showpath)
+	width := getTermWidth()
+	params := getApiParameters(op, showpath, width)
 	sample := getApiExample(op)
-	description := markdown.Render(cleanMarkup.ReplaceAllString(op.Op.Description, ""), 80, 6)
+	description := markdown.Render(cleanMarkup.ReplaceAllString(op.Op.Description, ""), width, DefaultMargin)
 
 	var bold = lipgloss.NewStyle().
 		Bold(true)
 	var paragraph = lipgloss.NewStyle().
 		MarginBottom(1).
-		MarginLeft(4)
+		MarginLeft(DefaultMargin)
 	var boldparagraph = lipgloss.NewStyle().
 		MarginBottom(1).
-		MarginLeft(4).
+		MarginLeft(DefaultMargin).
 		Bold(true)
 	var indentparagraph = lipgloss.NewStyle().
 		MarginBottom(1).
@@ -372,7 +377,7 @@ func findTags(op *Op) []string {
 }
 
 // Get API parameters
-func getApiParameters(op *Op, path string) Params {
+func getApiParameters(op *Op, path string, width int) Params {
 	params := Params{}
 	pathParams := []string{}
 	pathParamsReg := regexp.MustCompile(`{([a-z_]+)}`)
@@ -400,7 +405,7 @@ func getApiParameters(op *Op, path string) Params {
 			}
 		} else {
 			par := Param{
-				Description: string(markdown.Render(param.Description, 80, 6)),
+				Description: string(markdown.Render(param.Description, width, DefaultMargin)),
 				Param:       param.Name,
 			}
 
@@ -501,3 +506,17 @@ func findOperation(item spec.PathItemProps) []*Op {
 
 	return ops
 }
+
+func getTermWidth() int {
+	if term.IsTerminal(int(os.Stdout.Fd())) {
+		println("in a term")
+	} else {
+		println("not in a term")
+	}
+	width, _, err := term.GetSize(int(os.Stdout.Fd()))
+	if err != nil {
+		return 80
+	}
+
+	return width - DefaultMargin
+}