Initial commit

scripts/rsw/internal/render/markdown.go

@@ -0,0 +1,142 @@
+package render
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Builder accumulates markdown output.
+type Builder struct {
+	sb strings.Builder
+}
+
+// New creates a new markdown builder.
+func New() *Builder {
+	return &Builder{}
+}
+
+// H1 writes a level-1 heading.
+func (b *Builder) H1(text string) {
+	fmt.Fprintf(&b.sb, "# %s\n\n", text)
+}
+
+// H2 writes a level-2 heading.
+func (b *Builder) H2(text string) {
+	fmt.Fprintf(&b.sb, "## %s\n\n", text)
+}
+
+// H3 writes a level-3 heading.
+func (b *Builder) H3(text string) {
+	fmt.Fprintf(&b.sb, "### %s\n\n", text)
+}
+
+// P writes a paragraph.
+func (b *Builder) P(text string) {
+	fmt.Fprintf(&b.sb, "%s\n\n", text)
+}
+
+// Bold writes bold text inline (no newline).
+func (b *Builder) Bold(text string) {
+	fmt.Fprintf(&b.sb, "**%s**", text)
+}
+
+// KV writes a key: value line.
+func (b *Builder) KV(key, value string) {
+	if value == "" {
+		return
+	}
+	fmt.Fprintf(&b.sb, "- **%s:** %s\n", key, value)
+}
+
+// Bullet writes a bullet point.
+func (b *Builder) Bullet(text string) {
+	fmt.Fprintf(&b.sb, "- %s\n", text)
+}
+
+// NumberedItem writes a numbered list item.
+func (b *Builder) NumberedItem(n int, text string) {
+	fmt.Fprintf(&b.sb, "%d. %s\n", n, text)
+}
+
+// Table writes a markdown table.
+func (b *Builder) Table(headers []string, rows [][]string) {
+	if len(headers) == 0 {
+		return
+	}
+
+	// Header row
+	fmt.Fprintf(&b.sb, "| %s |\n", strings.Join(headers, " | "))
+
+	// Separator
+	seps := make([]string, len(headers))
+	for i := range seps {
+		seps[i] = "---"
+	}
+	fmt.Fprintf(&b.sb, "| %s |\n", strings.Join(seps, " | "))
+
+	// Data rows
+	for _, row := range rows {
+		// Pad row to match header length
+		for len(row) < len(headers) {
+			row = append(row, "")
+		}
+		fmt.Fprintf(&b.sb, "| %s |\n", strings.Join(row[:len(headers)], " | "))
+	}
+	b.sb.WriteString("\n")
+}
+
+// Line writes a raw line.
+func (b *Builder) Line(text string) {
+	fmt.Fprintf(&b.sb, "%s\n", text)
+}
+
+// Newline writes an empty line.
+func (b *Builder) Newline() {
+	b.sb.WriteString("\n")
+}
+
+// HR writes a horizontal rule.
+func (b *Builder) HR() {
+	b.sb.WriteString("---\n\n")
+}
+
+// String returns the accumulated markdown.
+func (b *Builder) String() string {
+	return b.sb.String()
+}
+
+// FormatGP formats a coin amount with commas (e.g., 1,234,567 gp).
+func FormatGP(amount int) string {
+	if amount < 0 {
+		return fmt.Sprintf("-%s gp", addCommas(-amount))
+	}
+	return fmt.Sprintf("%s gp", addCommas(amount))
+}
+
+// FormatNumber formats a number with commas.
+func FormatNumber(n int) string {
+	return addCommas(n)
+}
+
+func addCommas(n int) string {
+	s := fmt.Sprintf("%d", n)
+	if len(s) <= 3 {
+		return s
+	}
+
+	var result strings.Builder
+	remainder := len(s) % 3
+	if remainder > 0 {
+		result.WriteString(s[:remainder])
+		if len(s) > remainder {
+			result.WriteString(",")
+		}
+	}
+	for i := remainder; i < len(s); i += 3 {
+		if i > remainder {
+			result.WriteString(",")
+		}
+		result.WriteString(s[i : i+3])
+	}
+	return result.String()
+}