-- Very simple text-based category
-- This category contains entries with
doc.new_category("example1", {
	name = "Text Example",
	-- This category uses a preset formspec builder for displaying simple text
	build_formspec = doc.entry_builders.text
})

-- Entry for the aforementioned category
doc.new_entry("example1", "text", {
	name = "Text example",
	-- For this category, the data is simply the text to be displayed
	data = "Lorem Minetest dolor sit amet. Bla bla bla bla Minetest bla bla bla bla Mese bla. Bla bla bla bla bla, celeron55 bla bla, bla.",
})

-- Category with hidden entry
doc.new_category("example_hide", {
	name = "Example Hidden",
	build_formspec = doc.entry_builders.text
})

doc.new_entry("example_hide", "hidden" {
	name = "Hidden Entry",
	hidden = true
	data = "This entry is hidden.",
})

--[[ A simple category with 3 entries: Cities ]]
doc.new_category("example2", {
	name="Example: Cities",
	description="Example category: Quick information about the cities of the world",
	-- This is a manual formspec builder: This will parse the entry data and turns it into nice formspec widgets
	build_formspec = function(data)
		return	"label[0,1;Description: "..minetest.formspec_escape(data.description).."]" ..
			"label[0,2;Population: "..data.population.."]"
	end,
})

doc.new_entry("example2", "london", {
	name="London",
	-- This data are then put into the previous build_formspec
	data = {
		description = "London is the capital of the United Kingdom.",
		population = 8538689,
	},
})
doc.new_entry("example2", "shanghai", {
	name="Shanghai",
	data = {
		description = "Shanghai lies in China and is one of the biggest cities in the world.",
		population = 23019148,
	},
})
doc.new_entry("example2", "tripoli", {
	name="Tripoli",
	data = {
		description = "Tripoli is the capital of Lybia.",
		population = 1780000,
	},
})

--[[ Formspec category: This category shows how you can use widgets in entries to interact with them ]]
doc.new_category("example3", {
	name="Example: Formspec",
	description="Example category for manual freeform formspec entries",
	-- This category uses one of the formspec entries
	build_formspec = doc.entry_builders.formspec,
})

doc.new_entry("example3", "simple", {
	name="Label",
	-- For the formspec type being used, the data is the raw formspec data
	data = "label[5,5;Just a label.]"
})
doc.new_entry("example3", "widgets", {
	name="Widget Chaos",
	-- Just some meaningless widgets for demonstration purposes
	data = "label[0,1;Label]label[0,2;Label 2]button[0,3;3,1;example_ignored;Button]textlist[0,4;4,4;example_ignored2;A,B,C,D;]scrollbar[4,1;2,0.2;horizontal;example_ignored3;0]",
})
doc.new_entry("example3", "testbutton", {
	name="Event Button",
	-- This button actually will be used for an event …
	data = "button[2,2;3,1;example_button;Event]",
})

-- … and here we react on the event by writing something into the chat
minetest.register_on_player_receive_fields(function(player, formname, fields)
	-- Condition 1: This checks if the player is even using the entry tab. This check is always the same
	if formname == "doc:entry" then
		local playername = player:get_player_name()
		-- Condition 2: this check is required to make sure we “listen” to the correct entry
		local category_id, entry_id = doc.get_selection(playername)
		if category_id == "example3" and entry_id == "testbutton" then
			-- Condition 3: Has the widget we actually care about been pressed?
			if fields.example_button then
				-- All conditions are met! Now the custom action can be executed
				minetest.chat_send_player(playername, "You have pressed the event button!")
			end
		end
	end
end)

--[[ This category shows off the gallery widget ]]
doc.new_category("example4", {
	name="Example: Galleries",
	build_formspec = function(data, playername)
		local formspec = ""
		-- Mostly using default values, but we want an aspect ratio of 1:1 (square).
		formspec = formspec .. doc.widgets.gallery(data, playername, nil, nil, 1)
		return formspec
	end,
})

-- Several gallery entries
doc.new_entry("example4", "gallery2", {
	name="Gallery with 2 images",
	data = {{image="default_grass.png"}, {image="default_book.png"}},
})

doc.new_entry("example4", "gallery3", {
	name="Gallery with 3 images",
	data = {{image="default_grass.png"}, {image="default_book.png"}, {image="default_papyrus.png"}},
})

doc.new_entry("example4", "gallery4", {
	name="Gallery with 4 images",
	data = {{image="default_dirt.png"}, {image="default_leaves.png"}, {image="default_brick.png"}, {image="default_gold_block.png"}},
})

doc.new_entry("example4", "gallery5", {
	name="Gallery with 5 images",
	data = {{image="default_dirt.png"}, {image="default_leaves.png"}, {image="default_brick.png"}, {image="default_gold_block.png"}, {image="default_bronze_block.png"}},
})

doc.new_entry("example4", "gallery6", {
	name="Gallery with 6 images",
	data = {{image="default_grass.png"},{image="default_dirt.png"}, {image="default_leaves.png"}, {image="default_brick.png"}, {image="default_gold_block.png"}, {image="default_bronze_block.png"}},
})

doc.new_entry("example4", "gallery7", {
	name="Gallery with 7 item images",
	data = {
		-- You can use this syntax to display item images instead of normal textures
		{image="default:bookshelf", imagetype="item"},
		{image="default:grass_5", imagetype="item"},
		{image="default:dirt", imagetype="item"},
		{image="default:fence_wood", imagetype="item"},
		{image="default:flint", imagetype="item"},
		{image="default:goldblock", imagetype="item"},
		{image="default:bronzeblock", imagetype="item"}},
})