local json = require("json")

-- We'll use these two tables to demonstrate encoding and
-- decoding of custom types below.
local response1 = {
    page = 1,
    fruits = {"apple", "peach", "pear"}
}

local response2 = {
    page = 1,
    fruits = {"apple", "peach", "pear"}
}

-- First we'll look at encoding basic data types to
-- JSON strings. Here are some examples for atomic values.
print(json.encode(true))
print(json.encode(1))
print(json.encode(2.34))
print(json.encode("gopher"))

-- And here are some for tables, which encode
-- to JSON arrays and objects as you'd expect.
local slcD = {"apple", "peach", "pear"}
print(json.encode(slcD))

local mapD = {apple = 5, lettuce = 7}
print(json.encode(mapD))

-- The JSON module can automatically encode your
-- custom data types.
print(json.encode(response1))
print(json.encode(response2))

-- Now let's look at decoding JSON data into Lua
-- values. Here's an example for a generic data structure.
local byt = '{"num":6.13,"strs":["a","b"]}'

-- We need to provide a variable where the JSON
-- module can put the decoded data. This will be a table.
local dat = json.decode(byt)
print(json.encode(dat))  -- Re-encode to print

-- In order to use the values in the decoded table,
-- we can access them directly.
local num = dat.num
print(num)

-- Accessing nested data is straightforward in Lua.
local str1 = dat.strs[1]
print(str1)

-- We can also decode JSON into custom data types.
local str = '{"page": 1, "fruits": ["apple", "peach"]}'
local res = json.decode(str)
print(json.encode(res))
print(res.fruits[1])

-- In Lua, we can write JSON directly to a file or
-- any other output stream.
local file = io.open("output.json", "w")
file:write(json.encode({apple = 5, lettuce = 7}))
file:close()