mirror of
https://github.com/badlogic/heissepreise.git
synced 2024-06-23 00:45:41 +02:00
h43z historical data processing WIP
This commit is contained in:
parent
7e0b6ac1f6
commit
b5f35f34e5
54
h43z.js
Normal file
54
h43z.js
Normal file
|
@ -0,0 +1,54 @@
|
||||||
|
const fs = require("fs");
|
||||||
|
const analysis = require("./analysis");
|
||||||
|
const Database = require("better-sqlite3");
|
||||||
|
const db = new Database("/Users/badlogic/Downloads/shops.db", { verbose: console.log });
|
||||||
|
let items = [];
|
||||||
|
const lookup = {};
|
||||||
|
|
||||||
|
if (!fs.existsSync("h43z.json")) {
|
||||||
|
let stmt = db.prepare("select * from product");
|
||||||
|
for (const row of stmt.iterate()) {
|
||||||
|
const item = {
|
||||||
|
store: row.store == "billa" ? "billa" : "spar",
|
||||||
|
id: row.product_id,
|
||||||
|
sparId: row.sparId,
|
||||||
|
name: row.name,
|
||||||
|
price: 0,
|
||||||
|
priceHistory: [],
|
||||||
|
isWeighted: false,
|
||||||
|
unit: "g",
|
||||||
|
quantity: 0,
|
||||||
|
bio: false,
|
||||||
|
url: "",
|
||||||
|
};
|
||||||
|
items.push(item);
|
||||||
|
lookup[row.product_id] = item;
|
||||||
|
}
|
||||||
|
console.log(items.length + " products");
|
||||||
|
|
||||||
|
stmt = db.prepare("select * from pricehistory order by date desc");
|
||||||
|
let i = 0;
|
||||||
|
let unknown = 0;
|
||||||
|
for (const row of stmt.iterate()) {
|
||||||
|
i++;
|
||||||
|
const item = lookup[row.product_id];
|
||||||
|
if (!item) {
|
||||||
|
unknown++;
|
||||||
|
} else {
|
||||||
|
if (item.priceHistory.length == 0 || item.priceHistory[item.priceHistory.length - 1].price != row.price)
|
||||||
|
item.priceHistory.push({ date: row.date, price: row.price });
|
||||||
|
}
|
||||||
|
if (i % 1000 == 0) {
|
||||||
|
console.log("Processed " + i + " prices, " + unknown + " unknown");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
items = items.filter((item) => item.priceHistory.length > 0);
|
||||||
|
items.forEach((item) => {
|
||||||
|
item.price = item.priceHistory[0];
|
||||||
|
});
|
||||||
|
analysis.writeJSON("h43z.json", items);
|
||||||
|
}
|
||||||
|
|
||||||
|
items = analysis.readJSON("h43z.json");
|
||||||
|
analysis.writeJSON("h43z.compressed.json", items, false, 0, true);
|
Loading…
Reference in New Issue
Block a user