const fs = require("fs");
async function run({ renderFunctionFilePath, routePatterns }) {
fs.mkdirSync("functions/render");
fs.mkdirSync("functions/server-render");
fs.copyFileSync(
renderFunctionFilePath,
"./functions/render/elm-pages-cli.js"
);
fs.copyFileSync(
renderFunctionFilePath,
"./functions/server-render/elm-pages-cli.js"
);
fs.writeFileSync("./functions/render/index.js", rendererCode(true));
fs.writeFileSync("./functions/server-render/index.js", rendererCode(false));
// TODO rename functions/render to functions/fallback-render
// TODO prepend instead of writing file
console.log(routePatterns);
const redirectsFile =
routePatterns
.filter(isServerSide)
.map((route) => {
if (route.kind === "prerender-with-fallback") {
return `${route.pathPattern} /.netlify/functions/render 200
${route.pathPattern}/content.json /.netlify/functions/render 200`;
} else {
return `${route.pathPattern} /.netlify/functions/server-render 200
${route.pathPattern}/content.json /.netlify/functions/server-render 200`;
}
})
.join("\n") + "\n";
fs.writeFileSync("dist/_redirects", redirectsFile);
}
function isServerSide(route) {
return (
route.kind === "prerender-with-fallback" || route.kind === "serverless"
);
}
run({
renderFunctionFilePath: "./elm-stuff/elm-pages/elm.js",
routePatterns: JSON.parse(fs.readFileSync("dist/route-patterns.json")),
});
/**
* @param {boolean} isOnDemand
*/
function rendererCode(isOnDemand) {
return `const path = require("path");
${
isOnDemand
? `const { builder } = require("@netlify/functions");
exports.handler = builder(render);`
: `
exports.handler = render;`
}
/**
* @param {import('aws-lambda').APIGatewayProxyEvent} event
* @param {any} context
*/
async function render(event, context) {
console.log(JSON.stringify(event));
global.staticHttpCache = {};
const compiledElmPath = path.join(__dirname, "elm-pages-cli.js");
const renderer = require("../../../../generator/src/render");
try {
const basePath = "/";
const mode = "build";
const addWatcher = () => {};
const renderResult = await renderer(
basePath,
require(compiledElmPath),
mode,
event.path,
reqToJson(event),
addWatcher
);
const statusCode = renderResult.is404 ? 404 : 200;
if (renderResult.kind === "json") {
return {
body: renderResult.contentJson,
headers: {
"Content-Type": "application/json",
"x-powered-by": "elm-pages",
},
statusCode,
};
} else {
return {
body: renderResult.htmlString,
headers: {
"Content-Type": "text/html",
"x-powered-by": "elm-pages",
},
statusCode,
};
}
} catch (error) {
console.error(error);
return {
body: \`Error
\${error.toString()}\`,
statusCode: 500,
headers: {
"Content-Type": "text/html",
"x-powered-by": "elm-pages",
},
};
}
}
// * @param {import('aws-lambda').APIGatewayProxyEvent} event
/**
* @param {import('aws-lambda').APIGatewayProxyEvent} req
* @returns {{ method: string; hostname: string; query: string; headers: Object; host: string; pathname: string; port: number | null; protocol: string; rawUrl: string; }}
*/
function reqToJson(req) {
return {
method: req.httpMethod,
hostname: "TODO",
// query: req.queryStringParameters, //url.search ? url.search.substring(1) : "",
query: "", //url.search ? url.search.substring(1) : "",
headers: req.headers,
host: "", // TODO
pathname: req.path,
port: 80, // TODO
protocol: "https", // TODO
rawUrl: "", // TODO
};
}
`;
}