Zig Requires Chilkat v11.4.0+

Finnhub API - Get Stock Quote

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Demonstrates how to get a stock quote from the Finnhub API. Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // Replace with your actual Finnhub API key.
    const api_key = "YOUR_FINNHUB_API_KEY";
    const symbol = "AAPL";

    const http = try chilkat.Http.init();
    defer http.deinit();

    // This is the URL without params.
    const url_without_params = "https://finnhub.io/api/v1/quote";

    const req = try chilkat.HttpRequest.init();
    defer req.deinit();

    // Add params that will be sent in the URL.
    req.addParam("symbol", symbol);
    req.addParam("token", api_key);

    req.setHttpVerb("GET");

    // Send the request to get the JSON response.
    const resp = try chilkat.HttpResponse.init();
    defer resp.deinit();
    http.httpReq(url_without_params, req, resp) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    resp.getBodyJson(json) catch {};

    const status_code = resp.getStatusCode();
    std.debug.print("response status code: {d}\n", .{status_code});

    json.setEmitCompact(false);
    std.debug.print("{s}\n", .{try json.emit(alloc)});

    // Sample result:

    // {
    //   "c": 248.8,
    //   "d": -4.09,
    //   "dp": -1.6173,
    //   "h": 255.493,
    //   "l": 248.07,
    //   "o": 253.9,
    //   "pc": 252.89,
    //   "t": 1774641600
    // }

    if (status_code == 200) {
        // Add the symbol to the top of the result.
        json.addStringAt(0, "symbol", symbol) catch {};

        // Rename members for clarification.
        json.rename("c", "currentPrice") catch {};
        json.rename("d", "change") catch {};
        json.rename("dp", "percentChange") catch {};
        json.rename("h", "high") catch {};
        json.rename("l", "low") catch {};
        json.rename("o", "open") catch {};
        json.rename("pc", "prevClose") catch {};
        json.rename("t", "unixTime") catch {};

        std.debug.print("{s}\n", .{try json.emit(alloc)});
    } else {
        std.debug.print("Failed\n", .{});
    }
}