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| 1 | +const std = @import("std"); |
| 2 | +const httpz = @import("httpz"); |
| 3 | +const logz = @import("logz"); |
| 4 | +const datastar = @import("datastar"); |
| 5 | +const plants = @import("05_plants.zig"); |
| 6 | +const homepage = @embedFile("05_index.html"); |
| 7 | + |
| 8 | +const App = plants.App; |
| 9 | +const Allocator = std.mem.Allocator; |
| 10 | + |
| 11 | +const PORT = 8085; |
| 12 | + |
| 13 | +// SSE and pub/sub to have realtime updates of updates to the garden |
| 14 | +pub fn main() !void { |
| 15 | + var gpa: std.heap.DebugAllocator(.{}) = .init; |
| 16 | + const allocator = gpa.allocator(); |
| 17 | + |
| 18 | + var app = try App.init(allocator); |
| 19 | + defer app.deinit(); |
| 20 | + |
| 21 | + var server = try httpz.Server(*App).init(allocator, .{ |
| 22 | + .port = PORT, |
| 23 | + .address = "0.0.0.0", |
| 24 | + }, app); |
| 25 | + |
| 26 | + const game_t = try std.Thread.spawn(.{}, updateLoop, .{app}); |
| 27 | + defer game_t.join(); |
| 28 | + |
| 29 | + defer { // clean shutdown |
| 30 | + server.stop(); |
| 31 | + server.deinit(); |
| 32 | + } |
| 33 | + |
| 34 | + // initialize a logging pool |
| 35 | + try logz.setup(allocator, .{ |
| 36 | + .level = .Info, |
| 37 | + .pool_size = 100, |
| 38 | + .buffer_size = 4096, |
| 39 | + .large_buffer_count = 8, |
| 40 | + .large_buffer_size = 16384, |
| 41 | + .output = .stdout, |
| 42 | + .encoding = .logfmt, |
| 43 | + }); |
| 44 | + defer logz.deinit(); |
| 45 | + |
| 46 | + var router = try server.router(.{}); |
| 47 | + |
| 48 | + router.get("/", index, .{}); |
| 49 | + router.get("/plants", plantList, .{}); |
| 50 | + router.post("/planteffect/:side/:plantid", postPlantEffect, .{}); |
| 51 | + router.get("/assets/:assetname", postAsset, .{}); |
| 52 | + |
| 53 | + std.debug.print("listening http://localhost:{d}/\n", .{PORT}); |
| 54 | + std.debug.print("... or any other IP address pointing to this machine\n", .{}); |
| 55 | + try server.listen(); |
| 56 | +} |
| 57 | + |
| 58 | +fn updateLoop(app: *App) !void { |
| 59 | + while (true) { |
| 60 | + try app.updatePlants(); |
| 61 | + std.Thread.sleep(std.time.ns_per_s); |
| 62 | + } |
| 63 | +} |
| 64 | + |
| 65 | +fn index(_: *App, _: *httpz.Request, res: *httpz.Response) !void { |
| 66 | + const t1 = std.time.microTimestamp(); |
| 67 | + defer { |
| 68 | + const t2 = std.time.microTimestamp(); |
| 69 | + logz.info().string("event", "index").int("elapsed (μs)", t2 - t1).log(); |
| 70 | + } |
| 71 | + res.content_type = .HTML; |
| 72 | + res.body = homepage; |
| 73 | +} |
| 74 | + |
| 75 | +fn postAsset(_: *App, req: *httpz.Request, res: *httpz.Response) !void { |
| 76 | + const t1 = std.time.microTimestamp(); |
| 77 | + defer { |
| 78 | + const t2 = std.time.microTimestamp(); |
| 79 | + logz.info().string("event", "index").int("elapsed (μs)", t2 - t1).log(); |
| 80 | + } |
| 81 | + const file_name = req.param("assetname").?; |
| 82 | + |
| 83 | + const static_dir = "./examples/assets/fantasy_crops"; //try std.fmt.allocPrint(res.arena, "{s}/{s}", .{static_dir,file_name}); |
| 84 | + const fullPath = try std.fmt.allocPrint(res.arena, "{s}/{s}", .{ static_dir, file_name }); |
| 85 | + |
| 86 | + const file = try std.fs.cwd().openFile(fullPath, .{}); |
| 87 | + defer file.close(); |
| 88 | + res.content_type = .PNG; |
| 89 | + res.body = try file.readToEndAlloc(res.arena, 100000); |
| 90 | +} |
| 91 | + |
| 92 | +fn plantList(app: *App, _: *httpz.Request, res: *httpz.Response) !void { |
| 93 | + const t1 = std.time.microTimestamp(); |
| 94 | + app.mutex.lock(); |
| 95 | + defer { |
| 96 | + app.mutex.unlock(); |
| 97 | + const t2 = std.time.microTimestamp(); |
| 98 | + logz.info().string("event", "plantsList").int("elapsed (μs)", t2 - t1).log(); |
| 99 | + } |
| 100 | + |
| 101 | + const stream: std.net.Stream = try res.startEventStreamSync(); |
| 102 | + // DO NOT close - this stream stays open forever |
| 103 | + // and gets subscribed to "plants" update events |
| 104 | + try app.subscribe("plants", stream, App.publishPlantList); |
| 105 | + try app.subscribe("crops", stream, App.publishCropCounts); |
| 106 | + |
| 107 | + // just to be silly - try to multi subscribe, and observe that it detects that its already subbed |
| 108 | + try app.subscribe("plants", stream, App.publishPlantList); |
| 109 | + try app.subscribe("crops", stream, App.publishCropCounts); |
| 110 | + try app.subscribe("plants", stream, App.publishPlantList); |
| 111 | + try app.subscribe("crops", stream, App.publishCropCounts); |
| 112 | +} |
| 113 | + |
| 114 | +fn postPlantEffect(app: *App, req: *httpz.Request, _: *httpz.Response) !void { |
| 115 | + const t1 = std.time.microTimestamp(); |
| 116 | + app.mutex.lock(); |
| 117 | + defer { |
| 118 | + app.mutex.unlock(); |
| 119 | + const t2 = std.time.microTimestamp(); |
| 120 | + logz.info().string("event", "postPlantEffect").int("elapsed (μs)", t2 - t1).log(); |
| 121 | + } |
| 122 | + |
| 123 | + const side_param = req.param("side").?; |
| 124 | + const left = if (std.mem.eql(u8, side_param, "inc")) true else false; |
| 125 | + |
| 126 | + const id_param = req.param("plantid").?; |
| 127 | + const id = try std.fmt.parseInt(usize, id_param, 10); |
| 128 | + |
| 129 | + if (id < 0 or id >= 4) return error.InvalidID; |
| 130 | + |
| 131 | + const Hand = struct { |
| 132 | + hand: []const u8, |
| 133 | + }; |
| 134 | + |
| 135 | + const signals = try datastar.readSignals(Hand, req); |
| 136 | + |
| 137 | + var plant_slot = app.plants[id]; |
| 138 | + if (plant_slot) |*plant| { // Plant exists |
| 139 | + if (plant.growth_stage == .Fruiting) { //Collect crop and update crop counter |
| 140 | + switch (plant.crop_type) { |
| 141 | + .Carrot => { |
| 142 | + app.crop_counts[0] += 1; |
| 143 | + }, |
| 144 | + .Radish => { |
| 145 | + app.crop_counts[1] += 1; |
| 146 | + }, |
| 147 | + .Gourd => { |
| 148 | + app.crop_counts[2] += 1; |
| 149 | + }, |
| 150 | + .Onion => { |
| 151 | + app.crop_counts[3] += 1; |
| 152 | + }, |
| 153 | + } |
| 154 | + app.plants[id] = null; |
| 155 | + try app.publish("plants"); |
| 156 | + try app.publish("crops"); |
| 157 | + return; |
| 158 | + } |
| 159 | + |
| 160 | + if (std.mem.eql(u8, signals.hand, "watering")) { |
| 161 | + app.plants[id].?.stats.water += if (left) 0.1 else 0; |
| 162 | + } else if (std.mem.eql(u8, signals.hand, "fertilizing")) { |
| 163 | + app.plants[id].?.stats.ph += if (left) 0.1 else -0.1; |
| 164 | + } else if (std.mem.eql(u8, signals.hand, "sunning")) { |
| 165 | + app.plants[id].?.stats.sun += if (left) 0.1 else -0.1; |
| 166 | + } else if (std.mem.eql(u8, signals.hand, "shovel")) { |
| 167 | + // Remove plant at index |
| 168 | + app.plants[id] = null; |
| 169 | + } |
| 170 | + } else { |
| 171 | + if (std.mem.eql(u8, signals.hand, "carrot")) { |
| 172 | + app.plants[id] = plants.CarrotConfig; |
| 173 | + } else if (std.mem.eql(u8, signals.hand, "gourd")) { |
| 174 | + app.plants[id] = plants.GourdConfig; |
| 175 | + } else if (std.mem.eql(u8, signals.hand, "radish")) { |
| 176 | + app.plants[id] = plants.RadishConfig; |
| 177 | + } else if (std.mem.eql(u8, signals.hand, "onion")) { |
| 178 | + app.plants[id] = plants.OnionConfig; |
| 179 | + } |
| 180 | + } |
| 181 | + // update any screens subscribed to "plants" |
| 182 | + try app.publish("plants"); |
| 183 | +} |
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