package main

import (
	"bytes"
	"context"
	"strconv"
	"strings"
)

// TerminalHeadingBlock renders a heading with markdown-style hash prefix and
// uppercase tracking, per the terminal aesthetic.
//
// Content shape (same as built-in heading): {text, level, textClass}.
func TerminalHeadingBlock(ctx context.Context, content map[string]any) string {
	text := strings.ToUpper(getString(content, "text"))
	textClass := getString(content, "textClass")
	level := parseHeadingLevel(content)

	var buf bytes.Buffer
	_ = terminalHeadingComponent(level, text, textClass).Render(ctx, &buf)
	return buf.String()
}

// parseHeadingLevel parses the level from content, defaulting to 2. Tolerates
// JSON float64, native int, and string-encoded levels.
func parseHeadingLevel(content map[string]any) int {
	if level, ok := content["level"].(float64); ok {
		l := int(level)
		if l >= 1 && l <= 6 {
			return l
		}
	}
	if level, ok := content["level"].(int); ok {
		if level >= 1 && level <= 6 {
			return level
		}
	}
	if level, ok := content["level"].(string); ok {
		if l, err := strconv.Atoi(level); err == nil && l >= 1 && l <= 6 {
			return l
		}
	}
	return 2
}