/
index.js
73 lines (62 loc) · 1.58 KB
/
index.js
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const app = require("express")();
const idempotency = require("./idempotency")();
const { userRepository } = require("./repositories");
let counter = 0;
app.post(
"/user",
idempotency.useIdempotency({
generateIdempotentResult: (userJson, statusCode) => {
return { body: userJson, statusCode };
},
generateIdempotentErrorResult: (error) => {
if (error.message === "User cannot be created") {
return {
statusCode: 409,
body: "User is duplicated",
};
}
return {
statusCode: 500,
body: "Internal Server Error",
};
},
}),
async (req, res, next) => {
try {
const user = await userRepository.create({ id: counter });
if (counter === 2) {
counter++;
// simulate an error
throw new Error("User cannot be created");
}
counter++;
res.json(user);
} catch (err) {
next(err);
}
}
);
app.get("/user/:id", async (req, res) => {
console.log("get latest state for a user", req.params.id);
res.send(await userRepository.retrieve(req.params.id));
});
app.post(
"/v2/user",
idempotency.useIdempotency({
generateIdempotentResult: (userJson) => {
const parsed = JSON.parse(userJson);
return {
redirect_uri: `http://localhost:3000/user/${parsed.id}`,
};
},
}),
async (req, res) => {
const user = await userRepository.create({ id: counter });
counter++;
res.json(user);
}
);
app.use("*", idempotency.idempotency());
app.listen(3000, () => {
console.log("server listing on port 3000");
});