Add Snowflake, remove hello world

src/bonfire.v

@@ -1,6 +0,0 @@
-module bonfire
-
-// hello_world prints "Hello, world!" to the console.
-pub fn hello_world() {
-	println('Hello, world!')
-}

src/snowflake.v

@@ -0,0 +1,53 @@
+module bonfire
+
+import time
+
+// Time is a time.Time that can be formatted as a Discord timestamp.
+pub type Time = time.Time
+
+// TimeFormat is an enum of all possible Discord timestamp formats.
+pub enum TimeFormat as u8 {
+	short_time = u8(`t`) // 21:27
+	long_time = u8(`T`) // 21:27:42
+	short_date = u8(`d`) // 4/12/2022
+	long_date = u8(`D`) // 4 December 2022
+	short_date_time = u8(`f`) // 4 December 2022 21:27
+	long_date_time = u8(`F`) // Sunday, 4 December 2022 21:27
+	relative = u8(`R`) // 2 days ago, Now, etc.
+}
+
+// format returns a Discord representation of the time in the given format.
+[inline]
+pub fn (t Time) format(format TimeFormat) string {
+	return '<t:${t.unix}:${rune(format)}>'
+}
+
+// Snowflake is a Discord snowflake ID. It holds the time the
+// object was created, the ID of the worker that created it,
+// the ID of the process that created it, and a sequence number.
+pub type Snowflake = u64
+
+// created_at returns the time the Snowflake was created at.
+[inline]
+pub fn (s Snowflake) created_at() Time {
+	return time.unix(i64(((s >> 22) + 1420070400000) / 1000))
+}
+
+// worker_id returns the ID of the worker that created the Snowflake.
+[inline]
+pub fn (s Snowflake) worker_id() u8 {
+	return u8((s & 0x3E0000) >> 17)
+}
+
+// process_id returns the ID of the process that created the Snowflake.
+[inline]
+pub fn (s Snowflake) process_id() u8 {
+	return u8((s & 0x1F000) >> 12)
+}
+
+// sequence_number returns the sequence number of the Snowflake (For every Snowflake that
+// is generated in the process, the sequence number is incremented by 1).
+[inline]
+pub fn (s Snowflake) sequence_number() u16 {
+	return u16(s & 0xFFF)
+}

src/snowflake_test.v

@@ -0,0 +1,80 @@
+module bonfire
+
+fn test_time_format() {
+	time := Snowflake(512640455834337290).created_at()
+	assert time.format(.short_time) == '<t:1542293409:t>'
+	assert time.format(.long_time) == '<t:1542293409:T>'
+	assert time.format(.short_date) == '<t:1542293409:d>'
+	assert time.format(.long_date) == '<t:1542293409:D>'
+	assert time.format(.short_date_time) == '<t:1542293409:f>'
+	assert time.format(.long_date_time) == '<t:1542293409:F>'
+	assert time.format(.relative) == '<t:1542293409:R>'
+}
+
+fn test_snowflake() {
+	snowflake_0 := Snowflake(512640455834337290)
+	assert snowflake_0.created_at().unix == 1542293409
+	assert snowflake_0.worker_id() == 0
+	assert snowflake_0.process_id() == 0
+	assert snowflake_0.sequence_number() == 10
+
+	snowflake_1 := Snowflake(254608322391572481)
+	assert snowflake_1.created_at().unix == 1480773754
+	assert snowflake_1.worker_id() == 1
+	assert snowflake_1.process_id() == 0
+	assert snowflake_1.sequence_number() == 1
+
+	snowflake_2 := Snowflake(170939974227591168)
+	assert snowflake_2.created_at().unix == 1460825665
+	assert snowflake_2.worker_id() == 0
+	assert snowflake_2.process_id() == 0
+	assert snowflake_2.sequence_number() == 0
+
+	snowflake_3 := Snowflake(107490111414882304)
+	assert snowflake_3.created_at().unix == 1445698039
+	assert snowflake_3.worker_id() == 0
+	assert snowflake_3.process_id() == 5
+	assert snowflake_3.sequence_number() == 0
+
+	snowflake_4 := Snowflake(616951104282034177)
+	assert snowflake_4.created_at().unix == 1567163005
+	assert snowflake_4.worker_id() == 2
+	assert snowflake_4.process_id() == 0
+	assert snowflake_4.sequence_number() == 1
+
+	snowflake_5 := Snowflake(582718866786877440)
+	assert snowflake_5.created_at().unix == 1559001404
+	assert snowflake_5.worker_id() == 0
+	assert snowflake_5.process_id() == 0
+	assert snowflake_5.sequence_number() == 0
+
+	snowflake_6 := Snowflake(150203841827045376)
+	assert snowflake_6.created_at().unix == 1455881786
+	assert snowflake_6.worker_id() == 0
+	assert snowflake_6.process_id() == 0
+	assert snowflake_6.sequence_number() == 0
+
+	snowflake_7 := Snowflake(111761808640978944)
+	assert snowflake_7.created_at().unix == 1446716491
+	assert snowflake_7.worker_id() == 0
+	assert snowflake_7.process_id() == 3
+	assert snowflake_7.sequence_number() == 0
+
+	snowflake_8 := Snowflake(705836698080247911)
+	assert snowflake_8.created_at().unix == 1588354982
+	assert snowflake_8.worker_id() == 1
+	assert snowflake_8.process_id() == 0
+	assert snowflake_8.sequence_number() == 103
+
+	snowflake_9 := Snowflake(735856983231561740)
+	assert snowflake_9.created_at().unix == 1595512376
+	assert snowflake_9.worker_id() == 1
+	assert snowflake_9.process_id() == 0
+	assert snowflake_9.sequence_number() == 12
+
+	snowflake_10 := Snowflake(785793169542479893)
+	assert snowflake_10.created_at().unix == 1607418090
+	assert snowflake_10.worker_id() == 1
+	assert snowflake_10.process_id() == 0
+	assert snowflake_10.sequence_number() == 21
+}