WIP: CDP

Signed-off-by: Francis Bouvier <francis@lightpanda.io>

src/cdp/browser.zig

@@ -0,0 +1,77 @@
+const std = @import("std");
+
+const server = @import("../server.zig");
+const Ctx = server.CmdContext;
+const SendFn = server.SendFn;
+const result = @import("cdp.zig").result;
+const getParams = @import("cdp.zig").getParams;
+
+const BrowserMethods = enum {
+    getVersion,
+    setDownloadBehavior,
+};
+
+pub fn browser(
+    alloc: std.mem.Allocator,
+    id: u64,
+    action: []const u8,
+    scanner: *std.json.Scanner,
+    ctx: *Ctx,
+    comptime sendFn: SendFn,
+) ![]const u8 {
+    const method = std.meta.stringToEnum(BrowserMethods, action) orelse
+        return error.UnknownBrowserMethod;
+    return switch (method) {
+        .getVersion => browserGetVersion(alloc, id, scanner, ctx, sendFn),
+        .setDownloadBehavior => browserSetDownloadBehavior(alloc, id, scanner, ctx, sendFn),
+    };
+}
+
+const ProtocolVersion = "1.3";
+const Product = "Chrome/124.0.6367.29";
+const Revision = "@9e6ded5ac1ff5e38d930ae52bd9aec09bd1a68e4";
+const UserAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36";
+const JsVersion = "12.4.254.8";
+
+fn browserGetVersion(
+    alloc: std.mem.Allocator,
+    id: u64,
+    _: *std.json.Scanner,
+    _: *Ctx,
+    comptime _: SendFn,
+) ![]const u8 {
+    const Res = struct {
+        protocolVersion: []const u8,
+        product: []const u8,
+        revision: []const u8,
+        userAgent: []const u8,
+        jsVersion: []const u8,
+    };
+
+    const res = Res{
+        .protocolVersion = ProtocolVersion,
+        .product = Product,
+        .revision = Revision,
+        .userAgent = UserAgent,
+        .jsVersion = JsVersion,
+    };
+    return result(alloc, id, Res, res);
+}
+
+fn browserSetDownloadBehavior(
+    alloc: std.mem.Allocator,
+    id: u64,
+    scanner: *std.json.Scanner,
+    _: *Ctx,
+    comptime _: SendFn,
+) ![]const u8 {
+    const Params = struct {
+        behavior: []const u8,
+        browserContextId: ?[]const u8 = null,
+        downloadPath: ?[]const u8 = null,
+        eventsEnabled: ?bool = null,
+    };
+    const params = try getParams(alloc, Params, scanner);
+    std.log.debug("params {any}", .{params});
+    return result(alloc, id, null, null);
+}