Port Brave Sync server to Rust

Use SQLite for persistence and generate Rust protobuf bindings at build time.

Add Docker image support for containerized deployment.

Co-Authored-By: codex <[email protected]>

schema/protobuf/sync_pb/autofill_offer_specifics.proto

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+// Copyright 2020 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// If you change or add any fields in this file, update proto_visitors.h and
+// potentially proto_enum_conversions.{h, cc}.
+
+syntax = "proto2";
+
+option go_package = "./sync_pb";
+
+option java_multiple_files = true;
+option java_package = "org.chromium.components.sync.protocol";
+
+option optimize_for = LITE_RUNTIME;
+
+package sync_pb;
+
+// Properties of Autofill wallet offer related objects.
+
+// Next tag: 11
+message AutofillOfferSpecifics {
+  // The id for this offer data. Will be used as the client tag.
+  optional int64 id = 1;
+
+  // The link leading to the offer details page on Gpay app. Will be populated
+  // on Android only.
+  optional string offer_details_url = 2;
+
+  // Merchant domain and merchant app package name refers to the merchant this
+  // offer is applied to.
+  repeated string merchant_domain = 3;
+  repeated string merchant_app_package = 4;
+
+  // The expiry of this offer. Will be represented in the form of unix epoch
+  // time in seconds. Once the offer is expired it will not be shown in the
+  // client.
+  optional int64 offer_expiry_date = 5;
+
+  // Proto containing data specific to a card-linked offer.
+  message CardLinkedOfferData {
+    reserved 1, 2;
+
+    // The server id of the card to which the offer is linked.
+    repeated int64 instrument_id = 3;
+  }
+
+  // Proto containing data specific to a promo code offer.
+  message PromoCodeOfferData {
+    // The actual promo code which can be applied at checkout.
+    optional string promo_code = 1;
+  }
+
+  // The unique offer data for different offer types.
+  oneof type_specific_offer_data {
+    CardLinkedOfferData card_linked_offer_data = 6;
+    PromoCodeOfferData promo_code_offer_data = 9;
+  }
+
+  // Strings to be shown in client UI, based on the offer type and details.
+  message DisplayStrings {
+    // A message translated in the user's GPay app locale, explaining the value
+    // of the offer. For example, a promo code offer might display
+    // "$5 off on shoes, up to $50."
+    optional string value_prop_text = 1;
+
+    // A message translated in the user's GPay app locale and shown on mobile as
+    // a link, prompting the user to click it to learn more about the offer.
+    // Generally, "See details".
+    optional string see_details_text_mobile = 2;
+
+    // A message translated in the user's GPay app locale and shown on desktop
+    // (not as a link), informing the user that exclusions and restrictions may
+    // apply to the value prop text. Generally, "Terms apply."
+    optional string see_details_text_desktop = 3;
+
+    // A message translated in the user's GPay app locale and shown on mobile,
+    // instructing them on how to redeem the offer. For example, a promo code
+    // offer might display "Tap the promo code field at checkout to autofill
+    // it."
+    optional string usage_instructions_text_mobile = 4;
+
+    // A message translated in the user's GPay app locale and shown on desktop,
+    // instructing them on how to redeem the offer. For example, a promo code
+    // offer might display "Click the promo code field at checkout to autofill
+    // it."
+    optional string usage_instructions_text_desktop = 5;
+  }
+  optional DisplayStrings display_strings = 10;
+
+  // This value will be shown in the offer text template as "XXX% cashback".
+  // Percentage has a range of (0, 100].
+  message PercentageReward {
+    // The string contains a number and a percent sign.
+    optional string percentage = 1;
+  }
+
+  // This value will be shown in the offer text template as "XXX$ off".
+  message FixedAmountReward {
+    // The string contains a number and a currency sign.
+    optional string amount = 1;
+  }
+
+  // The reward type of the offer. Will be used to generate the display text in
+  // the UI. Each type has its own client side text template.
+  oneof reward_type {
+    PercentageReward percentage_reward = 7;
+    FixedAmountReward fixed_amount_reward = 8;
+  }
+}