package main

import (
	"bytes"
	"context"

	"git.dev.alexdunmow.com/block/core/blocks"
)

// MenuBoardBlockMeta defines metadata for the menu_board block.
var MenuBoardBlockMeta = blocks.BlockMeta{
	Key:         "menu_board",
	Title:       "Menu Board",
	Description: "Kraft-paper menu with sections of items (espresso, filter, pastry, ...)",
	Source:      "coffee",
}

// MenuBoardBlock renders a sectioned menu card.
// Content shape:
//
//	{
//	  "title": "Menu",
//	  "sections": [
//	    {"name": "Espresso", "items": [
//	      {"name": "Flat White", "price": "5.50", "note": "...", "allergens": "..."}
//	    ]}
//	  ]
//	}
func MenuBoardBlock(ctx context.Context, content map[string]any) string {
	title := getString(content, "title")
	if title == "" {
		title = "Menu"
	}

	rawSections := getSlice(content, "sections")
	var sections []MenuSection
	for _, s := range rawSections {
		rawItems := getSlice(s, "items")
		var items []MenuItem
		for _, it := range rawItems {
			items = append(items, MenuItem{
				Name:      getString(it, "name"),
				Price:     getString(it, "price"),
				Note:      getString(it, "note"),
				Allergens: getString(it, "allergens"),
			})
		}
		sections = append(sections, MenuSection{
			Name:  getString(s, "name"),
			Items: items,
		})
	}

	data := MenuBoardData{
		Title:    title,
		Sections: sections,
	}

	var buf bytes.Buffer
	_ = menuBoardComponent(data).Render(ctx, &buf)
	return buf.String()
}

// MenuBoardData contains data for the menu board component.
type MenuBoardData struct {
	Title    string
	Sections []MenuSection
}

// MenuSection groups a list of items under a heading.
type MenuSection struct {
	Name  string
	Items []MenuItem
}

// MenuItem represents a single menu line.
type MenuItem struct {
	Name      string
	Price     string
	Note      string
	Allergens string
}