openapi-generator/modules/swagger-codegen/src/main/resources/lua/api.mustache

{{>partial_header}}
--package {{packageName}}

{{#operations}}
local http_request = require "http.request"
local http_util = require "http.util"
local dkjson = require "dkjson"
local basexx = require "basexx"

-- model import
local {{{packageName}}}_{{classname}} = require "{{{packageName}}}.api.{{classname}}"

local {{{packageName}}}= {}
local {{{packageName}}}_mt = {
	__name = "{{{classname}}}";
	__index = {{{packageName}}};
}

local function new_{{classname}}(host, basePath, schemes)
	local schemes_map = {}
	for _,v in ipairs(schemes) do
		schemes_map[v] = v
	end
	local default_scheme = schemes_map.https or schemes_map.http
	return setmetatable({
		host = host;
		basePath = basePath or "{{{basePath}}}";
		schemes = schemes_map;
		default_scheme = default_scheme;
		http_username = nil;
		http_password = nil;
		api_key = {};
		access_token = nil;
	}, {{{packageName}}}_mt)
end

{{#operation}}
function {{classname}}:{{operationId}}({{#allParams}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}})
	local req = http_request.new_from_uri({
		scheme = self.default_scheme;
		host = self.host;
		path = string.format("%s{{{vendorExtensions.x-codegen-path}}}{{#queryParams}}{{#-first}}?{{/-first}}{{{baseName}}}=%s{{^-last}}&{{/-last}}{{/queryParams}}",
			self.basePath{{#pathParams}}, {{paramName}}{{/pathParams}}{{#queryParams}}, http_util.encodeURIComponent({{paramName}}){{/queryParams}});
	})

	-- set HTTP verb
	req.headers:upsert(":method", "{{httpMethod}}")
	{{#hasConsumes}}
	-- TODO: create a function to select proper accept
	-- ref: https://github.com/swagger-api/swagger-codegen/pull/6252#issuecomment-321199879
	--local var_content_type = { {{#consumes}}"{{{mediaType}}}"{{#hasMore}}, {{/hasMore}}{{/consumes}} }
	req.headers:upsert("accept", {{#consumes}}{{#-first}}"{{{mediaType}}}"{{/-first}}{{/consumes}})

	{{/hasConsumes}}
	{{#hasProduces}}
	-- TODO: create a function to select proper content-type
	-- ref: https://github.com/swagger-api/swagger-codegen/pull/6252#issuecomment-321199879
	--local var_accept = { {{#produces}}"{{{mediaType}}}"{{#hasMore}}, {{/hasMore}}{{/produces}} }
	req.headers:upsert("content-type", {{#produces}}{{#-first}}"{{{mediaType}}}"{{/-first}}{{/produces}})

	{{/hasProduces}}
	{{#headerParams}}
	req.headers:upsert("{{baseName}}", {{paramName}})
	{{/headerParams}}
	{{#formParams}}
	{{#-first}}
	req:set_body(http_util.dict_to_query({
	{{/-first}}
		["{{baseName}}"] = {{paramName}};
	{{#-last}}
	}))
	{{/-last}}
	{{/formParams}}
	{{#bodyParams}}
	req:set_body(dkjson.encode({{paramName}}))

	{{/bodyParams}}
	{{#authMethods}}
	{{#isApiKey}}
	{{#isKeyInHeader}}
	-- api key in headers '{{keyParamName}}'
	req.headers:upsert("{{{name}}}", api_key['{{{keyParamName}}}'])
	{{/isKeyInHeader}}
	{{#isKeyInQuery}}
	-- TODO: api key in query '{{keyParamName}}'
	{{/isKeyInQuery}}
	{{/isApiKey}}
	{{#isBasic}}
	-- HTTP basic auth
	req.readers:upsert("authorization", "Basic " .. basexx.to_base64(self.http_username .. " " .. self.http_password))
	{{/isBasic}}
	{{#isOAuth}}
	-- oAuth
	req.headers:upsert("authorization", "Bearer " .. self.access_token)
	{{/isOAuth}}
	{{/authMethods}}

	-- make the HTTP call
	local headers, stream, errno = req:go()
	if not headers then
		return nil, stream, errno
	end
	local http_status = headers:get(":status")
	if http_status:sub(1,1) == "2" then
		{{#returnType}}
		local body, err, errno2 = stream:get_body_as_string()
		-- exception when getting the HTTP body
		if not body then
			return nil, err, errno2
		end
		stream:shutdown()
		local result, _, err3 = dkjson.decode(body)
		-- exception when decoding the HTTP body
		if result == nil then
			return nil, err3
		end
		{{#returnTypeIsPrimitive}}
		return result, headers
		{{/returnTypeIsPrimitive}}
		{{^returnTypeIsPrimitive}}
		{{#isListContainer}}
		for _, ob in ipairs(result) do
			cast_{{returnType}}(ob)
		end
		return result, headers
		{{/isListContainer}}
		{{#isMapContainer}}
		return result, headers
		{{/isMapContainer}}
		{{^isMapContainer}}
		{{^isListContainer}}
		return cast_{{returnType}}(result), headers
		{{/isListContainer}}
		{{/isMapContainer}}
		{{/returnTypeIsPrimitive}}
		{{/returnType}}
		{{^returnType}}
		return nil, headers
		{{/returnType}}
	else
		local body, err, errno2 = stream:get_body_as_string()
		if not body then
			return nil, err, errno2
		end
		stream:shutdown()
		-- return the error message (http body)
		return nil, http_status, body
	end
end

{{/operation}}
{{/operations}}