commit 56de31d5c59f2b1ded1c1a81dbdb56e76ef8c97f
Author: Rokas Puzonas <rokas.puz@gmail.com>
Date:   Wed Jul 31 01:12:40 2024 +0300

    initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4c82b07
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+zig-cache
+zig-out
diff --git a/build.zig b/build.zig
new file mode 100644
index 0000000..f23c750
--- /dev/null
+++ b/build.zig
@@ -0,0 +1,35 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const exe = b.addExecutable(.{
+        .name = "artificer",
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    b.installArtifact(exe);
+
+    const run_cmd = b.addRunArtifact(exe);
+    run_cmd.step.dependOn(b.getInstallStep());
+
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    const exe_unit_tests = b.addTest(.{
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&run_exe_unit_tests.step);
+}
diff --git a/build.zig.zon b/build.zig.zon
new file mode 100644
index 0000000..dadd4eb
--- /dev/null
+++ b/build.zig.zon
@@ -0,0 +1,7 @@
+.{
+    .name = "artificer",
+    .version = "0.1.0",
+    .minimum_zig_version = "0.12.0",
+    .dependencies = .{ },
+    .paths = .{ "" },
+}
diff --git a/src/artifacts.zig b/src/artifacts.zig
new file mode 100644
index 0000000..12fb3b2
--- /dev/null
+++ b/src/artifacts.zig
@@ -0,0 +1,544 @@
+const std = @import("std");
+const json = std.json;
+const Allocator = std.mem.Allocator;
+
+// Specification: https://api.artifactsmmo.com/docs
+
+// TODO: Convert 'expiration' date time strings into date time objects
+
+const ArtifactsAPI = @This();
+
+pub const APIErrors = error {
+    RequestFailed,
+    ParseFailed
+};
+
+const ServerStatus = struct {
+    // TODO: Parse the rest of the fields
+    allocator: Allocator,
+    status: []const u8,
+    version: []const u8,
+
+    fn parse(allocator: Allocator, object: json.ObjectMap) !ServerStatus {
+        const status = getJsonString(object, "status") orelse return error.MissingStatus;
+        const version = getJsonString(object, "version") orelse return error.MissingVersion;
+
+        return ServerStatus{
+            .allocator = allocator,
+            .status = try allocator.dupe(u8, status),
+            .version = try allocator.dupe(u8, version)
+        };
+    }
+
+    pub fn deinit(self: ServerStatus) void {
+        self.allocator.free(self.status);
+        self.allocator.free(self.version);
+    }
+};
+
+pub const Character = struct {
+    pub const SkillStats = struct {
+        level: i64,
+        xp: i64,
+        max_xp: i64,
+
+        fn parse(object: json.ObjectMap, level: []const u8, xp: []const u8, max_xp: []const u8) !SkillStats {
+            return SkillStats{
+                .level  = getJsonInteger(object, level) orelse return error.MissingProperty,
+                .xp     = getJsonInteger(object, xp) orelse return error.MissingProperty,
+                .max_xp = getJsonInteger(object, max_xp) orelse return error.MissingProperty,
+            };
+        }
+    };
+
+    pub const CombatStats = struct {
+        attack: i64,
+        damage: i64,
+        resistance: i64,
+
+        fn parse(object: json.ObjectMap, attack: []const u8, damage: []const u8, resistance: []const u8) !CombatStats {
+            return CombatStats{
+                .attack = getJsonInteger(object, attack) orelse return error.MissingProperty,
+                .damage = getJsonInteger(object, damage) orelse return error.MissingProperty,
+                .resistance = getJsonInteger(object, resistance) orelse return error.MissingProperty,
+            };
+        }
+    };
+
+    pub const Equipment = struct {
+        pub const Consumable = struct {
+            name: []u8,
+            quantity: i64,
+
+            fn parse(allocator: Allocator, obj: json.ObjectMap, name: []const u8, quantity: []const u8) !Consumable {
+                return Consumable{
+                    .name = (try dupeJsonString(allocator, obj, name)) orelse return error.MissingProperty,
+                    .quantity = getJsonInteger(obj, quantity) orelse return error.MissingProperty,
+                };
+            }
+        };
+
+        weapon: []u8,
+        shield: []u8,
+        helmet: []u8,
+        body_armor: []u8,
+        leg_armor: []u8,
+        boots: []u8,
+
+        ring1: []u8,
+        ring2: []u8,
+        amulet: []u8,
+
+        artifact1: []u8,
+        artifact2: []u8,
+        artifact3: []u8,
+
+        consumable1: Consumable,
+        consumable2: Consumable,
+
+        fn parse(allocator: Allocator, obj: json.ObjectMap) !Equipment {
+            return Equipment{
+                .weapon = (try dupeJsonString(allocator, obj, "weapon_slot")) orelse return error.MissingProperty,
+                .shield = (try dupeJsonString(allocator, obj, "shield_slot")) orelse return error.MissingProperty,
+                .helmet = (try dupeJsonString(allocator, obj, "helmet_slot")) orelse return error.MissingProperty,
+                .body_armor = (try dupeJsonString(allocator, obj, "body_armor_slot")) orelse return error.MissingProperty,
+                .leg_armor = (try dupeJsonString(allocator, obj, "leg_armor_slot")) orelse return error.MissingProperty,
+                .boots = (try dupeJsonString(allocator, obj, "boots_slot")) orelse return error.MissingProperty,
+                .ring1 = (try dupeJsonString(allocator, obj, "ring1_slot")) orelse return error.MissingProperty,
+                .ring2 = (try dupeJsonString(allocator, obj, "ring2_slot")) orelse return error.MissingProperty,
+                .amulet = (try dupeJsonString(allocator, obj, "amulet_slot")) orelse return error.MissingProperty,
+                .artifact1 = (try dupeJsonString(allocator, obj, "artifact1_slot")) orelse return error.MissingProperty,
+                .artifact2 = (try dupeJsonString(allocator, obj, "artifact2_slot")) orelse return error.MissingProperty,
+                .artifact3 = (try dupeJsonString(allocator, obj, "artifact3_slot")) orelse return error.MissingProperty,
+                .consumable1 = try Consumable.parse(allocator, obj, "consumable1_slot", "consumable1_slot_quantity"),
+                .consumable2 = try Consumable.parse(allocator, obj, "consumable2_slot", "consumable2_slot_quantity"),
+            };
+        }
+    };
+
+    arena: *std.heap.ArenaAllocator,
+
+    name: []u8,
+    skin: []u8,
+    account: ?[]u8,
+    total_xp: i64,
+    gold: i64,
+    hp: i64,
+    haste: i64,
+    x: i64,
+    y: i64,
+    cooldown: i64,
+    cooldown_expiration: []u8,
+
+    combat: SkillStats,
+    mining: SkillStats,
+    woodcutting: SkillStats,
+    fishing: SkillStats,
+    weaponcrafting: SkillStats,
+    gearcrafting: SkillStats,
+    jewelrycrafting: SkillStats,
+    cooking: SkillStats,
+
+    water: CombatStats,
+    fire: CombatStats,
+    earth: CombatStats,
+    air: CombatStats,
+
+    equipment: Equipment,
+
+    fn parse(child_allocator: Allocator, obj: json.ObjectMap) !Character {
+        var arena = try child_allocator.create(std.heap.ArenaAllocator);
+        errdefer child_allocator.destroy(arena);
+
+        arena.* = std.heap.ArenaAllocator.init(child_allocator);
+        errdefer arena.deinit();
+
+        const allocator = arena.allocator();
+
+        return Character{
+            .arena = arena,
+            .account = try dupeJsonString(allocator, obj, "account"),
+            .name = (try dupeJsonString(allocator, obj, "name")) orelse return error.MissingProperty,
+            .skin = (try dupeJsonString(allocator, obj, "skin")) orelse return error.MissingProperty,
+
+            .total_xp = getJsonInteger(obj, "total_xp") orelse return error.MissingProperty,
+            .gold     = getJsonInteger(obj, "gold")     orelse return error.MissingProperty,
+            .hp       = getJsonInteger(obj, "hp")       orelse return error.MissingProperty,
+            .haste    = getJsonInteger(obj, "haste")    orelse return error.MissingProperty,
+            .x        = getJsonInteger(obj, "x")        orelse return error.MissingProperty,
+            .y        = getJsonInteger(obj, "y")        orelse return error.MissingProperty,
+            .cooldown = getJsonInteger(obj, "cooldown") orelse return error.MissingProperty,
+            .cooldown_expiration = (try dupeJsonString(allocator, obj, "cooldown_expiration")) orelse return error.MissingProperty,
+
+            .combat          = try SkillStats.parse(obj, "level", "xp", "max_xp"),
+            .mining          = try SkillStats.parse(obj, "mining_level", "mining_xp", "mining_max_xp"),
+            .woodcutting     = try SkillStats.parse(obj, "woodcutting_level", "woodcutting_xp", "woodcutting_max_xp"),
+            .fishing         = try SkillStats.parse(obj, "fishing_level", "fishing_xp", "fishing_max_xp"),
+            .weaponcrafting  = try SkillStats.parse(obj, "weaponcrafting_level", "weaponcrafting_xp", "weaponcrafting_max_xp"),
+            .gearcrafting    = try SkillStats.parse(obj, "gearcrafting_level", "gearcrafting_xp", "gearcrafting_max_xp"),
+            .jewelrycrafting = try SkillStats.parse(obj, "jewelrycrafting_level", "jewelrycrafting_xp", "jewelrycrafting_max_xp"),
+            .cooking         = try SkillStats.parse(obj, "cooking_level", "cooking_xp", "cooking_max_xp"),
+
+            .water = try CombatStats.parse(obj, "attack_water", "dmg_water", "res_water"),
+            .fire  = try CombatStats.parse(obj, "attack_fire", "dmg_fire", "res_fire"),
+            .earth = try CombatStats.parse(obj, "attack_earth", "dmg_earth", "res_earth"),
+            .air   = try CombatStats.parse(obj, "attack_air", "dmg_air", "res_air"),
+
+            .equipment = try Equipment.parse(allocator, obj)
+        };
+    }
+
+    pub fn deinit(self: *Character) void {
+        var child_allocator = self.arena.child_allocator;
+        self.arena.deinit();
+        child_allocator.destroy(self.arena);
+    }
+};
+
+pub const CharacterList = struct {
+    allocator: Allocator,
+    items: []Character,
+
+    pub fn deinit(self: CharacterList) void {
+        for (self.items) |*char| {
+            char.deinit();
+        }
+        self.allocator.free(self.items);
+    }
+};
+
+pub const Cooldown = struct {
+    pub const Reason = enum {
+        movement,
+        fight,
+        crafting,
+        gathering,
+        buy_ge,
+        sell_ge,
+        delete_item,
+        deposit_bank,
+        withdraw_bank,
+        equip,
+        unequip,
+        task,
+        recycling,
+
+        fn parse(str: []const u8) ?Reason {
+            const eql = std.mem.eql;
+            if (eql(u8, str, "movement")) {
+                return .movement;
+            } else if (eql(u8, str, "fight")) {
+                return .fight;
+            } else if (eql(u8, str, "crafting")) {
+                return .crafting;
+            } else if (eql(u8, str, "gathering")) {
+                return .gathering;
+            } else if (eql(u8, str, "buy_ge")) {
+                return .buy_ge;
+            } else if (eql(u8, str, "sell_ge")) {
+                return .sell_ge;
+            } else if (eql(u8, str, "delete_item")) {
+                return .delete_item;
+            } else if (eql(u8, str, "deposit_bank")) {
+                return .deposit_bank;
+            } else if (eql(u8, str, "withdraw_bank")) {
+                return .withdraw_bank;
+            } else if (eql(u8, str, "equip")) {
+                return .equip;
+            } else if (eql(u8, str, "unequip")) {
+                return .unequip;
+            } else if (eql(u8, str, "task")) {
+                return .task;
+            } else if (eql(u8, str, "recycling")) {
+                return .recycling;
+            } else {
+                return null;
+            }
+        }
+    };
+
+    allocator: Allocator,
+    total_seconds: i64,
+    remaining_seconds: i64,
+    expiration: []u8,
+    reason: Reason,
+
+    fn parse(allocator: Allocator, obj: json.ObjectMap) !Cooldown {
+        const reason = getJsonString(obj, "reason") orelse return error.MissingProperty;
+        return Cooldown{
+            .allocator = allocator,
+            .total_seconds = getJsonInteger(obj, "totalSeconds") orelse return error.MissingProperty,
+            .remaining_seconds = getJsonInteger(obj, "remainingSeconds") orelse return error.MissingProperty,
+            .expiration = (try dupeJsonString(allocator, obj, "expiration")) orelse return error.MissingProperty,
+            .reason = Reason.parse(reason) orelse return error.UnknownReason
+        };
+    }
+
+    pub fn deinit(self: Cooldown) void {
+        self.allocator.free(self.expiration);
+    }
+};
+
+pub const FightResult = struct {
+    cooldown: Cooldown,
+
+    fn parse(allocator: Allocator, obj: json.ObjectMap) !FightResult {
+        const cooldown = getJsonObject(obj, "cooldown") orelse return error.MissingProperty;
+
+        return FightResult{
+            .cooldown = try Cooldown.parse(allocator, cooldown)
+        };
+    }
+
+    pub fn deinit(self: FightResult) void {
+        self.cooldown.deinit();
+    }
+};
+
+const ArtifactsFetchResult = struct {
+    arena: std.heap.ArenaAllocator,
+    status: std.http.Status,
+    body: ?json.Value = null,
+
+    fn deinit(self: ArtifactsFetchResult) void {
+        self.arena.deinit();
+    }
+};
+
+allocator: Allocator,
+client: std.http.Client,
+
+server: []u8,
+server_uri: std.Uri,
+
+token: ?[]u8 = null,
+
+pub fn init(allocator: Allocator) !ArtifactsAPI {
+    const server = try allocator.dupe(u8, "https://api.artifactsmmo.com");
+    const server_uri = std.Uri.parse(server) catch unreachable;
+
+    return ArtifactsAPI{
+        .allocator = allocator,
+        .client = .{ .allocator = allocator },
+        .server = server,
+        .server_uri = server_uri
+    };
+}
+
+fn fetch(self: *ArtifactsAPI, method: std.http.Method, path: []const u8) !ArtifactsFetchResult {
+    var uri = self.server_uri;
+    uri.path = .{ .raw = path };
+
+    var arena = std.heap.ArenaAllocator.init(self.allocator);
+    errdefer arena.deinit();
+
+    var response_storage = std.ArrayList(u8).init(arena.allocator());
+
+    var opts = std.http.Client.FetchOptions{
+        .method = method,
+        .location = .{ .uri = uri },
+        .response_storage = .{ .dynamic = &response_storage }
+    };
+
+    var authorization_header: ?[]u8 = null;
+    defer if (authorization_header) |str| self.allocator.free(str);
+
+    if (self.token) |token| {
+        authorization_header = try std.fmt.allocPrint(self.allocator, "Bearer {s}", .{token});
+        opts.headers.authorization = .{ .override = authorization_header.? };
+    }
+
+    const result = try self.client.fetch(opts);
+
+    if (result.status != .ok) {
+        return ArtifactsFetchResult{
+            .arena = arena,
+            .status = result.status
+        };
+    }
+
+    const response_body = response_storage.items;
+
+    const parsed = try json.parseFromSliceLeaky(json.Value, arena.allocator(), response_body, .{ .allocate = .alloc_if_needed });
+    if (parsed != json.Value.object) {
+        return APIErrors.ParseFailed;
+    }
+
+    return ArtifactsFetchResult{
+        .status = result.status,
+        .arena = arena,
+        .body = parsed.object.get("data")
+    };
+}
+
+pub fn setServer(self: *ArtifactsAPI, url: []const u8) !void {
+    const url_dupe = self.allocator.dupe(u8, url);
+    errdefer self.allocator.free(url_dupe);
+
+    const uri = try std.Uri.parse(url_dupe);
+
+    self.allocator.free(self.server);
+    self.server = url_dupe;
+    self.server_uri = uri;
+}
+
+pub fn setToken(self: *ArtifactsAPI, token: ?[]const u8) !void {
+    var new_token: ?[]u8 = null;
+    if (token != null) {
+        new_token = try self.allocator.dupe(u8, token.?);
+    }
+
+    if (self.token) |str| self.allocator.free(str);
+    self.token = new_token;
+}
+
+fn getJsonString(object: json.ObjectMap, name: []const u8) ?[]const u8 {
+    const value = object.get(name);
+    if (value == null) {
+        return null;
+    }
+
+    if (value.? != json.Value.string) {
+        return null;
+    }
+
+    return value.?.string;
+}
+
+fn dupeJsonString(allocator: Allocator, object: json.ObjectMap, name: []const u8) !?[]u8 {
+    const str = getJsonString(object, name) orelse return null;
+    return try allocator.dupe(u8, str);
+}
+
+fn getJsonInteger(object: json.ObjectMap, name: []const u8) ?i64 {
+    const value = object.get(name);
+    if (value == null) {
+        return null;
+    }
+
+    if (value.? != json.Value.integer) {
+        return null;
+    }
+
+    return value.?.integer;
+}
+
+fn asJsonObject(value: json.Value) ?json.ObjectMap {
+    if (value != json.Value.object) {
+        return null;
+    }
+
+    return value.object;
+}
+
+fn asJsonArray(value: json.Value) ?json.Array {
+    if (value != json.Value.array) {
+        return null;
+    }
+
+    return value.array;
+}
+
+fn getJsonObject(object: json.ObjectMap, name: []const u8) ?json.ObjectMap {
+    const value = object.get(name);
+    if (value == null) {
+        return null;
+    }
+
+    return asJsonObject(value.?);
+}
+
+pub fn getServerStatus(self: *ArtifactsAPI) !ServerStatus {
+    const result = try self.fetch(.GET, "/");
+    defer result.deinit();
+
+    if (result.status != .ok) {
+        return APIErrors.RequestFailed;
+    }
+    if (result.body == null) {
+        return APIErrors.ParseFailed;
+    }
+
+    const body = asJsonObject(result.body.?) orelse return APIErrors.ParseFailed;
+    return ServerStatus.parse(self.allocator, body) catch return APIErrors.ParseFailed;
+}
+
+pub fn getCharacter(self: *ArtifactsAPI, name: []const u8) !Character {
+    const path = try std.fmt.allocPrint(self.allocator, "/characters/{s}", .{name});
+    defer self.allocator.free(path);
+
+    const result = try self.fetch(.GET, path);
+    defer result.deinit();
+
+    if (result.status != .ok) {
+        return APIErrors.RequestFailed;
+    }
+    if (result.body == null) {
+        return APIErrors.ParseFailed;
+    }
+
+    const body = asJsonObject(result.body.?) orelse return APIErrors.ParseFailed;
+    return Character.parse(self.allocator, body) catch return APIErrors.ParseFailed;
+}
+
+pub fn listMyCharacters(self: *ArtifactsAPI) !CharacterList {
+    const path = try std.fmt.allocPrint(self.allocator, "/my/characters", .{});
+    defer self.allocator.free(path);
+
+    const result = try self.fetch(.GET, path);
+    defer result.deinit();
+
+    if (result.status != .ok) {
+        return APIErrors.RequestFailed;
+    }
+    if (result.body == null) {
+        return APIErrors.ParseFailed;
+    }
+
+    const body = asJsonArray(result.body.?) orelse return APIErrors.ParseFailed;
+
+    var characters = try std.ArrayList(Character).initCapacity(self.allocator, body.items.len);
+    errdefer {
+        for (characters.items) |*char| {
+            char.deinit();
+        }
+        characters.deinit();
+    }
+
+    for (body.items) |character_json| {
+        const character_obj = asJsonObject(character_json) orelse return APIErrors.ParseFailed;
+        const char = Character.parse(self.allocator, character_obj) catch return APIErrors.ParseFailed;
+
+        characters.appendAssumeCapacity(char);
+    }
+
+
+    return CharacterList{
+        .allocator = self.allocator,
+        .items = characters.items
+    };
+}
+
+pub fn actionFight(self: *ArtifactsAPI, name: []const u8) !FightResult {
+    const path = try std.fmt.allocPrint(self.allocator, "/my/{s}/action/fight", .{name});
+    defer self.allocator.free(path);
+
+    const result = try self.fetch(.POST, path);
+    defer result.deinit();
+
+    if (result.status != .ok) {
+        return APIErrors.RequestFailed;
+    }
+    if (result.body == null) {
+        return APIErrors.ParseFailed;
+    }
+
+    const body = asJsonObject(result.body.?) orelse return APIErrors.ParseFailed;
+    return FightResult.parse(self.allocator, body) catch return APIErrors.ParseFailed;
+}
+
+pub fn deinit(self: *ArtifactsAPI) void {
+    self.client.deinit();
+    self.allocator.free(self.server);
+    if (self.token) |str| self.allocator.free(str);
+}
diff --git a/src/main.zig b/src/main.zig
new file mode 100644
index 0000000..d376917
--- /dev/null
+++ b/src/main.zig
@@ -0,0 +1,26 @@
+const std = @import("std");
+const ArtifactsAPI = @import("artifacts.zig");
+
+pub fn main() !void {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
+    const allocator = gpa.allocator();
+
+    var api = try ArtifactsAPI.init(allocator);
+    defer api.deinit();
+
+    { // Set auth token from environment variable
+        var env = try std.process.getEnvMap(allocator);
+        defer env.deinit();
+
+        const token = env.get("ARTIFACTS_TOKEN");
+        try api.setToken(token);
+    }
+
+    while (true) {
+        const result = try api.actionFight("Daisy");
+        defer result.deinit();
+
+        std.time.sleep(std.time.ns_per_s * (@as(u64, @intCast(result.cooldown.remaining_seconds)) + 1));
+    }
+}