From df0f14bcc24e2d0096a0e8f3640bcb883d0a9771 Mon Sep 17 00:00:00 2001
From: BlackYps <52536103+BlackYps@users.noreply.github.com>
Date: Sun, 25 Sep 2022 16:00:09 +0200
Subject: [PATCH] Automated seasons (#55)

---
 Pipfile                                   |   2 +
 Pipfile.lock                              | 811 ++++++++++++----------
 service.py                                |   4 +
 service/__init__.py                       |   2 +-
 service/config.py                         |   1 +
 service/db/models.py                      |   3 +
 service/generate_season.sql               | 113 +++
 service/season_generator.py               |  45 ++
 tests/data/test-data.sql                  |  12 +-
 tests/unit_tests/test_league_service.py   |  41 --
 tests/unit_tests/test_season_generator.py |  64 ++
 11 files changed, 699 insertions(+), 399 deletions(-)
 create mode 100644 service/generate_season.sql
 create mode 100644 service/season_generator.py
 create mode 100644 tests/unit_tests/test_season_generator.py

diff --git a/Pipfile b/Pipfile
index 254c7fd..840ca95 100644
--- a/Pipfile
+++ b/Pipfile
@@ -17,6 +17,7 @@ aio_pika = "*"
 aiocron = "*"
 prometheus_client = "*"
 yoyo-migrations = "*"
+pamqp = "==2.3.0"
 
 [dev-packages]
 pytest = "*"
@@ -27,6 +28,7 @@ python-coveralls = "*"
 mock = "*"
 pytest-mock = "*"
 vulture = "*"
+freezegun = "*"
 
 [requires]
 python_version = "3.7"
diff --git a/Pipfile.lock b/Pipfile.lock
index ceb8503..0e8bf4b 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "06ac7d18c22aaf894db873b7f932dcb5e713849842409f2fa9bffe0048552c09"
+            "sha256": "21c1e122848d3ce6d9313940ad90f884c9a0b5904d81eb6f0c9a7aeb02d137a2"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -18,27 +18,27 @@
     "default": {
         "aio-pika": {
             "hashes": [
-                "sha256:1d4305a5f78af3857310b4fe48348cdcf6c097e0e275ea88c2cd08570531a369",
-                "sha256:e69afef8695f47c5d107bbdba21bdb845d5c249acb3be53ef5c2d497b02657c0"
+                "sha256:4bf23e54bceb86b789d4b4a72ed65f2d83ede429d5f343de838ca72e54f00475",
+                "sha256:d89658148def0d8b8d795868a753fe2906f8d8fccee53e4a1b5093ddd3d2dc5c"
             ],
             "index": "pypi",
-            "version": "==6.8.0"
+            "version": "==6.8.2"
         },
         "aiocron": {
             "hashes": [
-                "sha256:ad7d3b9bd88897934ffd18937ff235ab9fb01358280fd40e01461fd5f76348bd",
-                "sha256:f06d7b84b86d6cb7156c01e640b4122da86afaa4873c6bcf79e57c4762e48789"
+                "sha256:48546513faf2eb7901e65a64eba7b653c80106ed00ed9ca3419c3d10b6555a01",
+                "sha256:b6313214c311b62aa2220e872b94139b648631b3103d062ef29e5d3230ddce6d"
             ],
             "index": "pypi",
-            "version": "==1.7"
+            "version": "==1.8"
         },
         "aiomysql": {
             "hashes": [
-                "sha256:811569c0db118dd2685f0878f5cebf17a11e89a995fa14261d5fa0254113842c",
-                "sha256:a81a97da3dd732635926a8ea6adbbf2d1345799680bf61b5f89e730bcec88cc5"
+                "sha256:0d686c4fdae6b67d1825d8be60fa3b0e644fca2c84d3c936d850fc259c8e107e",
+                "sha256:b66fa1481ca71c5ee0d933ec3abf51f6136543a3710ba80b134eb33da7ed6f13"
             ],
             "index": "pypi",
-            "version": "==0.0.21"
+            "version": "==0.1.1"
         },
         "aiormq": {
             "hashes": [
@@ -72,200 +72,247 @@
         },
         "croniter": {
             "hashes": [
-                "sha256:0f97b361fe343301a8f66f852e7d84e4fb7f21379948f71e1bbfe10f5d015fbd",
-                "sha256:a70dfc9d52de9fc1a886128b9148c89dd9e76b67d55f46516ca94d2d73d58219"
+                "sha256:12369c67e231c8ce5f98958d76ea6e8cb5b157fda4da7429d245a931e4ed411e",
+                "sha256:72ef78d0f8337eb35393b8893ebfbfbeb340f2d2ae47e0d2d78130e34b0dd8b9"
             ],
             "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==1.0.15"
+            "version": "==1.3.7"
         },
         "greenlet": {
             "hashes": [
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-            "version": "==1.1.1"
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+                "sha256:f5fa526d027d804b1f85cdda1eb091f70bde6fb7d87892f6dd5a48925bc88898"
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-            "version": "==1.4.24"
+            "version": "==1.4.41"
         },
         "sqlparse": {
             "hashes": [
@@ -277,10 +324,12 @@
         },
         "tabulate": {
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-            "version": "==0.8.9"
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+            "version": "==0.8.10"
         },
         "trueskill": {
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@@ -291,63 +340,92 @@
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-            "version": "==3.10.0.2"
+            "markers": "python_version < '3.8'",
+            "version": "==4.3.0"
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@@ -359,11 +437,11 @@
         },
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+            "markers": "python_version >= '3.7'",
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     "develop": {
@@ -377,100 +455,110 @@
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@@ -489,11 +577,11 @@
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@@ -505,27 +593,27 @@
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@@ -536,19 +624,19 @@
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@@ -558,55 +646,67 @@
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-                "sha256:cb333c16912324fd5f769fff6bc5de372e9e7a202247b48870bc251ed40239aa",
-                "sha256:d2d9808ea7b4af864f35ea216be506ecec180628aced0704e34aca0b040ffe46",
-                "sha256:d483ad4e639292c90170eb6f7783ad19490e7a8defb3e46f97dfe4bacae89122",
-                "sha256:dd5de0646207f053eb0d6c74ae45ba98c3395a571a2891858e87df7c9b9bd51b",
-                "sha256:e1d4970ea66be07ae37a3c2e48b5ec63f7ba6804bdddfdbd3cfd954d25a82e63",
-                "sha256:e4fac90784481d221a8e4b1162afa7c47ed953be40d31ab4629ae917510051df",
-                "sha256:fa5ae20527d8e831e8230cbffd9f8fe952815b2b7dae6ffec25318803a7528fc",
-                "sha256:fd7f6999a8070df521b6384004ef42833b9bd62cfee11a09bda1079b4b704247",
-                "sha256:fdc842473cd33f45ff6bce46aea678a54e3d21f1b61a7750ce3c498eedfe25d6",
-                "sha256:fe69978f3f768926cfa37b867e3843918e012cf83f680806599ddce33c2c68b0"
+                "sha256:0283c35a6a9fbf047493e3a0ce8d79ef5030852c51e9d911a27badfde0605293",
+                "sha256:055d937d65826939cb044fc8c9b08889e8c743fdc6a32b33e2390f66013e449b",
+                "sha256:07751360502caac1c067a8132d150cf3d61339af5691fe9e87803040dbc5db57",
+                "sha256:0b4624f379dab24d3725ffde76559cff63d9ec94e1736b556dacdfebe5ab6d4b",
+                "sha256:0ce82d761c532fe4ec3f87fc45688bdd3a4c1dc5e0b4a19814b9009a29baefd4",
+                "sha256:1e4747bc279b4f613a09eb64bba2ba602d8a6664c6ce6396a4d0cd413a50ce07",
+                "sha256:213c60cd50106436cc818accf5baa1aba61c0189ff610f64f4a3e8c6726218ba",
+                "sha256:231710d57adfd809ef5d34183b8ed1eeae3f76459c18fb4a0b373ad56bedcdd9",
+                "sha256:277a0ef2981ca40581a47093e9e2d13b3f1fbbeffae064c1d21bfceba2030287",
+                "sha256:2cd5df3de48857ed0544b34e2d40e9fac445930039f3cfe4bcc592a1f836d513",
+                "sha256:40527857252b61eacd1d9af500c3337ba8deb8fc298940291486c465c8b46ec0",
+                "sha256:473f9edb243cb1935ab5a084eb238d842fb8f404ed2193a915d1784b5a6b5fc0",
+                "sha256:48c346915c114f5fdb3ead70312bd042a953a8ce5c7106d5bfb1a5254e47da92",
+                "sha256:50602afada6d6cbfad699b0c7bb50d5ccffa7e46a3d738092afddc1f9758427f",
+                "sha256:68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2",
+                "sha256:77f396e6ef4c73fdc33a9157446466f1cff553d979bd00ecb64385760c6babdc",
+                "sha256:819b3830a1543db06c4d4b865e70ded25be52a2e0631ccd2f6a47a2822f2fd7c",
+                "sha256:897b80890765f037df3403d22bab41627ca8811ae55e9a722fd0392850ec4d86",
+                "sha256:98c4d36e99714e55cfbaaee6dd5badbc9a1ec339ebfc3b1f52e293aee6bb71a4",
+                "sha256:9df7ed3b3d2e0ecfe09e14741b857df43adb5a3ddadc919a2d94fbdf78fea53c",
+                "sha256:9fa600030013c4de8165339db93d182b9431076eb98eb40ee068700c9c813e34",
+                "sha256:a80a78046a72361de73f8f395f1f1e49f956c6be882eed58505a15f3e430962b",
+                "sha256:b3d267842bf12586ba6c734f89d1f5b871df0273157918b0ccefa29deb05c21c",
+                "sha256:b5b9eccad747aabaaffbc6064800670f0c297e52c12754eb1d976c57e4f74dcb",
+                "sha256:c5687b8d43cf58545ade1fe3e055f70eac7a5a1a0bf42824308d868289a95737",
+                "sha256:cba8c411ef271aa037d7357a2bc8f9ee8b58b9965831d9e51baf703280dc73d3",
+                "sha256:d15a181d1ecd0d4270dc32edb46f7cb7733c7c508857278d3d378d14d606db2d",
+                "sha256:d4db7c7aef085872ef65a8fd7d6d09a14ae91f691dec3e87ee5ee0539d516f53",
+                "sha256:d4eccecf9adf6fbcc6861a38015c2a64f38b9d94838ac1810a9023a0609e1b78",
+                "sha256:d67d839ede4ed1b28a4e8909735fc992a923cdb84e618544973d7dfc71540803",
+                "sha256:daf496c58a8c52083df09b80c860005194014c3698698d1a57cbcfa182142a3a",
+                "sha256:e61ceaab6f49fb8bdfaa0f92c4b57bcfbea54c09277b1b4f7ac376bfb7a7c174",
+                "sha256:f84fbc98b019fef2ee9a1cb3ce93e3187a6df0b2538a651bfb890254ba9f90b5"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
-            "version": "==5.4.1"
+            "markers": "python_version >= '3.6'",
+            "version": "==6.0"
         },
         "requests": {
             "hashes": [
-                "sha256:6c1246513ecd5ecd4528a0906f910e8f0f9c6b8ec72030dc9fd154dc1a6efd24",
-                "sha256:b8aa58f8cf793ffd8782d3d8cb19e66ef36f7aba4353eec859e74678b01b07a7"
+                "sha256:7c5599b102feddaa661c826c56ab4fee28bfd17f5abca1ebbe3e7f19d7c97983",
+                "sha256:8fefa2a1a1365bf5520aac41836fbee479da67864514bdb821f31ce07ce65349"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
-            "version": "==2.26.0"
+            "markers": "python_version >= '3.7' and python_version < '4'",
+            "version": "==2.28.1"
         },
         "six": {
             "hashes": [
                 "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
                 "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2'",
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==1.16.0"
         },
         "toml": {
@@ -614,41 +714,48 @@
                 "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b",
                 "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"
             ],
-            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2'",
+            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==0.10.2"
         },
+        "tomli": {
+            "hashes": [
+                "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc",
+                "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==2.0.1"
+        },
         "typing-extensions": {
             "hashes": [
-                "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e",
-                "sha256:d8226d10bc02a29bcc81df19a26e56a9647f8b0a6d4a83924139f4a8b01f17b7",
-                "sha256:f1d25edafde516b146ecd0613dabcc61409817af4766fbbcfb8d1ad4ec441a34"
+                "sha256:25642c956049920a5aa49edcdd6ab1e06d7e5d467fc00e0506c44ac86fbfca02",
+                "sha256:e6d2677a32f47fc7eb2795db1dd15c1f34eff616bcaf2cfb5e997f854fa1c4a6"
             ],
-            "markers": "python_version < '3.8' and python_version < '3.8'",
-            "version": "==3.10.0.2"
+            "markers": "python_version < '3.8'",
+            "version": "==4.3.0"
         },
         "urllib3": {
             "hashes": [
-                "sha256:4987c65554f7a2dbf30c18fd48778ef124af6fab771a377103da0585e2336ece",
-                "sha256:c4fdf4019605b6e5423637e01bc9fe4daef873709a7973e195ceba0a62bbc844"
+                "sha256:3fa96cf423e6987997fc326ae8df396db2a8b7c667747d47ddd8ecba91f4a74e",
+                "sha256:b930dd878d5a8afb066a637fbb35144fe7901e3b209d1cd4f524bd0e9deee997"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
-            "version": "==1.26.7"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5' and python_version < '4'",
+            "version": "==1.26.12"
         },
         "vulture": {
             "hashes": [
-                "sha256:03d5a62bcbe9ceb9a9b0575f42d71a2d414070229f2e6f95fa6e7c71aaaed967",
-                "sha256:f39de5e6f1df1f70c3b50da54f1c8d494159e9ca3d01a9b89eac929600591703"
+                "sha256:2831694055eb2e36a09c3b7680934837102b9b6c0969206e3902d513612177c3",
+                "sha256:a7c7e7a23b11e78840fdd821509d05a6134aa9fd60418fe39d60b3026fe698d9"
             ],
             "index": "pypi",
-            "version": "==2.3"
+            "version": "==2.5"
         },
         "zipp": {
             "hashes": [
-                "sha256:957cfda87797e389580cb8b9e3870841ca991e2125350677b2ca83a0e99390a3",
-                "sha256:f5812b1e007e48cff63449a5e9f4e7ebea716b4111f9c4f9a645f91d579bf0c4"
+                "sha256:05b45f1ee8f807d0cc928485ca40a07cb491cf092ff587c0df9cb1fd154848d2",
+                "sha256:47c40d7fe183a6f21403a199b3e4192cca5774656965b0a4988ad2f8feb5f009"
             ],
-            "markers": "python_version >= '3.6'",
-            "version": "==3.5.0"
+            "markers": "python_version >= '3.7'",
+            "version": "==3.8.1"
         }
     }
 }
diff --git a/service.py b/service.py
index ffd08e4..0a9bacc 100644
--- a/service.py
+++ b/service.py
@@ -7,6 +7,7 @@
 from service import config, db
 from service.league_service import LeagueService
 from service.message_queue_service import MessageQueueService
+from service.season_generator import SeasonGenerator
 
 
 async def main():
@@ -41,6 +42,9 @@ def signal_handler(sig: int, _frame):
     league_service = LeagueService(database, mq_service)
     await league_service.initialize()
 
+    season_generator = SeasonGenerator(database)
+    season_generator.initialize()
+
     await done
 
     # Cleanup
diff --git a/service/__init__.py b/service/__init__.py
index fa1f428..03a5691 100644
--- a/service/__init__.py
+++ b/service/__init__.py
@@ -1,4 +1,4 @@
-__author__ = "Askaholic, Clemens Borys"
+__author__ = "Askaholic, BlackYps, Clemens Borys"
 __contact__ = "admin@faforever.com"
 __license__ = "GPLv3"
 __copyright__ = "Copyright (c) 2020 " + __author__
diff --git a/service/config.py b/service/config.py
index 3842364..2ef3977 100644
--- a/service/config.py
+++ b/service/config.py
@@ -21,6 +21,7 @@
 MQ_VHOST = os.getenv("MQ_VHOST", "/faf-lobby")
 MQ_PREFETCH_COUNT = int(os.getenv("MQ_PREFETCH_COUNT", 300))
 
+SEASON_GENERATION_DAYS_BEFORE_SEASON_END = int(os.getenv("SEASON_GENERATION_DAYS_BEFORE_SEASON_END", 14))
 
 EXCHANGE_NAME = os.getenv("EXCHANGE_NAME", "faf-rabbitmq")
 QUEUE_NAME = os.getenv("QUEUE_NAME", "faf-league-service")
diff --git a/service/db/models.py b/service/db/models.py
index 6d9744c..c39fe3f 100644
--- a/service/db/models.py
+++ b/service/db/models.py
@@ -30,6 +30,7 @@
     Column("league_id",       Integer, ForeignKey("league.id")),
     Column("leaderboard_id",  Integer, ForeignKey("leaderboard.id")),
     Column("name_key",        String),
+    Column("season_number",   Integer),
     Column("placement_games", Integer),
     Column("placement_games_returning_player", Integer),
     Column("start_date",      TIMESTAMP),
@@ -42,6 +43,8 @@
     Column("id",               Integer, primary_key=True),
     Column("league_season_id", Integer, ForeignKey("league_season.id")),
     Column("division_index",   Integer),
+    Column("description_key",  String),
+    Column("name_key",         String),
 )
 
 league_season_division_subdivision = Table(
diff --git a/service/generate_season.sql b/service/generate_season.sql
new file mode 100644
index 0000000..0c9c754
--- /dev/null
+++ b/service/generate_season.sql
@@ -0,0 +1,113 @@
+SET time_zone='+00:00';
+
+SELECT @Seasonnumber := MAX(season_number) FROM league_season;
+SET @Seasonnumber = @Seasonnumber + 1;
+
+SET @start_date = ADDDATE(LAST_DAY(CURRENT_DATE), 1);
+SET @end_date = LAST_DAY(ADD_MONTHS(CURRENT_DATE, 3));
+
+-- season starts and ends at noon, so that all timezones see the same date in the client
+INSERT INTO league_season (id, league_id, leaderboard_id, placement_games, season_number, name_key, start_date, end_date) VALUES
+  (@Seasonnumber * 3,     1, 2, 10, @Seasonnumber, "1v1_season", TIMESTAMP(@start_date, "12:00:00"), TIMESTAMP(@end_date, "12:00:00")),
+  (@Seasonnumber * 3 + 1, 2, 3, 10, @Seasonnumber, "2v2_season", TIMESTAMP(@start_date, "12:00:00"), TIMESTAMP(@end_date, "12:00:00")),
+  (@Seasonnumber * 3 + 2, 3, 4, 10, @Seasonnumber, "4v4_fs_season", TIMESTAMP(@start_date, "12:00:00"), TIMESTAMP(@end_date, "12:00:00"));
+
+INSERT INTO league_season_division (id, league_season_id, division_index, description_key, name_key) VALUES
+  (@Seasonnumber * 18 - 6 +  1, @Seasonnumber * 3    , 1, CONCAT("1v1_season_", @Seasonnumber, ".division.1"), "bronze"),
+  (@Seasonnumber * 18 - 6 +  2, @Seasonnumber * 3    , 2, CONCAT("1v1_season_", @Seasonnumber, ".division.2"), "silver"),
+  (@Seasonnumber * 18 - 6 +  3, @Seasonnumber * 3    , 3, CONCAT("1v1_season_", @Seasonnumber, ".division.3"), "gold"),
+  (@Seasonnumber * 18 - 6 +  4, @Seasonnumber * 3    , 4, CONCAT("1v1_season_", @Seasonnumber, ".division.4"), "diamond"),
+  (@Seasonnumber * 18 - 6 +  5, @Seasonnumber * 3    , 5, CONCAT("1v1_season_", @Seasonnumber, ".division.5"), "master"),
+  (@Seasonnumber * 18 - 6 +  6, @Seasonnumber * 3    , 6, CONCAT("1v1_season_", @Seasonnumber, ".division.6"), "grandmaster"),
+  (@Seasonnumber * 18 - 6 +  7, @Seasonnumber * 3 + 1, 1, CONCAT("2v2_season_", @Seasonnumber, ".division.1"), "bronze"),
+  (@Seasonnumber * 18 - 6 +  8, @Seasonnumber * 3 + 1, 2, CONCAT("2v2_season_", @Seasonnumber, ".division.2"), "silver"),
+  (@Seasonnumber * 18 - 6 +  9, @Seasonnumber * 3 + 1, 3, CONCAT("2v2_season_", @Seasonnumber, ".division.3"), "gold"),
+  (@Seasonnumber * 18 - 6 + 10, @Seasonnumber * 3 + 1, 4, CONCAT("2v2_season_", @Seasonnumber, ".division.4"), "diamond"),
+  (@Seasonnumber * 18 - 6 + 11, @Seasonnumber * 3 + 1, 5, CONCAT("2v2_season_", @Seasonnumber, ".division.5"), "master"),
+  (@Seasonnumber * 18 - 6 + 12, @Seasonnumber * 3 + 1, 6, CONCAT("2v2_season_", @Seasonnumber, ".division.6"), "grandmaster"),
+  (@Seasonnumber * 18 - 6 + 13, @Seasonnumber * 3 + 2, 1, CONCAT("4v4_fs_season_", @Seasonnumber, ".division.1"), "bronze"),
+  (@Seasonnumber * 18 - 6 + 14, @Seasonnumber * 3 + 2, 2, CONCAT("4v4_fs_season_", @Seasonnumber, ".division.2"), "silver"),
+  (@Seasonnumber * 18 - 6 + 15, @Seasonnumber * 3 + 2, 3, CONCAT("4v4_fs_season_", @Seasonnumber, ".division.3"), "gold"),
+  (@Seasonnumber * 18 - 6 + 16, @Seasonnumber * 3 + 2, 4, CONCAT("4v4_fs_season_", @Seasonnumber, ".division.4"), "diamond"),
+  (@Seasonnumber * 18 - 6 + 17, @Seasonnumber * 3 + 2, 5, CONCAT("4v4_fs_season_", @Seasonnumber, ".division.5"), "master"),
+  (@Seasonnumber * 18 - 6 + 18, @Seasonnumber * 3 + 2, 6, CONCAT("4v4_fs_season_", @Seasonnumber, ".division.6"), "grandmaster");
+
+INSERT INTO league_season_division_subdivision (league_season_division_id, subdivision_index, description_key, min_rating, max_rating, highest_score, name_key) VALUES
+  (@Seasonnumber * 18 - 6 +  1, 1, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.1.1"), -800,  -40, 10, "V"),
+  (@Seasonnumber * 18 - 6 +  1, 2, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.1.2"),  -40,   45, 10, "IV"),
+  (@Seasonnumber * 18 - 6 +  1, 3, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.1.3"),   45,  130, 10, "III"),
+  (@Seasonnumber * 18 - 6 +  1, 4, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.1.4"),  130,  215, 10, "II"),
+  (@Seasonnumber * 18 - 6 +  1, 5, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.1.5"),  215,  300, 10, "I"),
+  (@Seasonnumber * 18 - 6 +  2, 1, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.2.1"),  300,  385, 10, "V"),
+  (@Seasonnumber * 18 - 6 +  2, 2, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.2.2"),  385,  470, 10, "IV"),
+  (@Seasonnumber * 18 - 6 +  2, 3, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.2.3"),  470,  555, 10, "III"),
+  (@Seasonnumber * 18 - 6 +  2, 4, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.2.4"),  555,  640, 10, "II"),
+  (@Seasonnumber * 18 - 6 +  2, 5, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.2.5"),  640,  725, 10, "I"),
+  (@Seasonnumber * 18 - 6 +  3, 1, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.3.1"),  725,  810, 10, "V"),
+  (@Seasonnumber * 18 - 6 +  3, 2, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.3.2"),  810,  895, 10, "IV"),
+  (@Seasonnumber * 18 - 6 +  3, 3, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.3.3"),  895,  980, 10, "III"),
+  (@Seasonnumber * 18 - 6 +  3, 4, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.3.4"),  980, 1065, 10, "II"),
+  (@Seasonnumber * 18 - 6 +  3, 5, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.3.5"), 1065, 1150, 10, "I"),
+  (@Seasonnumber * 18 - 6 +  4, 1, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.4.1"), 1150, 1235, 10, "V"),
+  (@Seasonnumber * 18 - 6 +  4, 2, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.4.2"), 1235, 1320, 10, "IV"),
+  (@Seasonnumber * 18 - 6 +  4, 3, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.4.3"), 1320, 1405, 10, "III"),
+  (@Seasonnumber * 18 - 6 +  4, 4, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.4.4"), 1405, 1490, 10, "II"),
+  (@Seasonnumber * 18 - 6 +  4, 5, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.4.5"), 1490, 1575, 10, "I"),
+  (@Seasonnumber * 18 - 6 +  5, 1, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.5.1"), 1575, 1660, 10, "V"),
+  (@Seasonnumber * 18 - 6 +  5, 2, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.5.2"), 1660, 1745, 10, "IV"),
+  (@Seasonnumber * 18 - 6 +  5, 3, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.5.3"), 1745, 1830, 10, "III"),
+  (@Seasonnumber * 18 - 6 +  5, 4, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.5.4"), 1830, 1915, 10, "II"),
+  (@Seasonnumber * 18 - 6 +  5, 5, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.5.5"), 1915, 2000, 10, "I"),
+  (@Seasonnumber * 18 - 6 +  6, 1, CONCAT("1v1_season_", @Seasonnumber, ".subdivision.6.1"), 2000, 2850, 100, ""),
+  (@Seasonnumber * 18 - 6 +  7, 1, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.1.1"), -800,  -40, 10, "V"),
+  (@Seasonnumber * 18 - 6 +  7, 2, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.1.2"),  -40,   45, 10, "IV"),
+  (@Seasonnumber * 18 - 6 +  7, 3, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.1.3"),   45,  130, 10, "III"),
+  (@Seasonnumber * 18 - 6 +  7, 4, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.1.4"),  130,  215, 10, "II"),
+  (@Seasonnumber * 18 - 6 +  7, 5, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.1.5"),  215,  300, 10, "I"),
+  (@Seasonnumber * 18 - 6 +  8, 1, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.2.1"),  300,  385, 10, "V"),
+  (@Seasonnumber * 18 - 6 +  8, 2, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.2.2"),  385,  470, 10, "IV"),
+  (@Seasonnumber * 18 - 6 +  8, 3, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.2.3"),  470,  555, 10, "III"),
+  (@Seasonnumber * 18 - 6 +  8, 4, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.2.4"),  555,  640, 10, "II"),
+  (@Seasonnumber * 18 - 6 +  8, 5, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.2.5"),  640,  725, 10, "I"),
+  (@Seasonnumber * 18 - 6 +  9, 1, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.3.1"),  725,  810, 10, "V"),
+  (@Seasonnumber * 18 - 6 +  9, 2, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.3.2"),  810,  895, 10, "IV"),
+  (@Seasonnumber * 18 - 6 +  9, 3, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.3.3"),  895,  980, 10, "III"),
+  (@Seasonnumber * 18 - 6 +  9, 4, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.3.4"),  980, 1065, 10, "II"),
+  (@Seasonnumber * 18 - 6 +  9, 5, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.3.5"), 1065, 1150, 10, "I"),
+  (@Seasonnumber * 18 - 6 + 10, 1, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.4.1"), 1150, 1235, 10, "V"),
+  (@Seasonnumber * 18 - 6 + 10, 2, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.4.2"), 1235, 1320, 10, "IV"),
+  (@Seasonnumber * 18 - 6 + 10, 3, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.4.3"), 1320, 1405, 10, "III"),
+  (@Seasonnumber * 18 - 6 + 10, 4, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.4.4"), 1405, 1490, 10, "II"),
+  (@Seasonnumber * 18 - 6 + 10, 5, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.4.5"), 1490, 1575, 10, "I"),
+  (@Seasonnumber * 18 - 6 + 11, 1, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.5.1"), 1575, 1660, 10, "V"),
+  (@Seasonnumber * 18 - 6 + 11, 2, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.5.2"), 1660, 1745, 10, "IV"),
+  (@Seasonnumber * 18 - 6 + 11, 3, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.5.3"), 1745, 1830, 10, "III"),
+  (@Seasonnumber * 18 - 6 + 11, 4, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.5.4"), 1830, 1915, 10, "II"),
+  (@Seasonnumber * 18 - 6 + 11, 5, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.5.5"), 1915, 2000, 10, "I"),
+  (@Seasonnumber * 18 - 6 + 12, 1, CONCAT("2v2_season_", @Seasonnumber, ".subdivision.6.1"), 2000, 2850, 100, ""),
+  (@Seasonnumber * 18 - 6 + 13, 1, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.1.1"), -800,  -40, 10, "V"),
+  (@Seasonnumber * 18 - 6 + 13, 2, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.1.2"),  -40,   45, 10, "IV"),
+  (@Seasonnumber * 18 - 6 + 13, 3, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.1.3"),   45,  130, 10, "III"),
+  (@Seasonnumber * 18 - 6 + 13, 4, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.1.4"),  130,  215, 10, "II"),
+  (@Seasonnumber * 18 - 6 + 13, 5, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.1.5"),  215,  300, 10, "I"),
+  (@Seasonnumber * 18 - 6 + 14, 1, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.2.1"),  300,  385, 10, "V"),
+  (@Seasonnumber * 18 - 6 + 14, 2, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.2.2"),  385,  470, 10, "IV"),
+  (@Seasonnumber * 18 - 6 + 14, 3, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.2.3"),  470,  555, 10, "III"),
+  (@Seasonnumber * 18 - 6 + 14, 4, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.2.4"),  555,  640, 10, "II"),
+  (@Seasonnumber * 18 - 6 + 14, 5, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.2.5"),  640,  725, 10, "I"),
+  (@Seasonnumber * 18 - 6 + 15, 1, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.3.1"),  725,  810, 10, "V"),
+  (@Seasonnumber * 18 - 6 + 15, 2, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.3.2"),  810,  895, 10, "IV"),
+  (@Seasonnumber * 18 - 6 + 15, 3, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.3.3"),  895,  980, 10, "III"),
+  (@Seasonnumber * 18 - 6 + 15, 4, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.3.4"),  980, 1065, 10, "II"),
+  (@Seasonnumber * 18 - 6 + 15, 5, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.3.5"), 1065, 1150, 10, "I"),
+  (@Seasonnumber * 18 - 6 + 16, 1, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.4.1"), 1150, 1235, 10, "V"),
+  (@Seasonnumber * 18 - 6 + 16, 2, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.4.2"), 1235, 1320, 10, "IV"),
+  (@Seasonnumber * 18 - 6 + 16, 3, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.4.3"), 1320, 1405, 10, "III"),
+  (@Seasonnumber * 18 - 6 + 16, 4, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.4.4"), 1405, 1490, 10, "II"),
+  (@Seasonnumber * 18 - 6 + 16, 5, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.4.5"), 1490, 1575, 10, "I"),
+  (@Seasonnumber * 18 - 6 + 17, 1, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.5.1"), 1575, 1660, 10, "V"),
+  (@Seasonnumber * 18 - 6 + 17, 2, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.5.2"), 1660, 1745, 10, "IV"),
+  (@Seasonnumber * 18 - 6 + 17, 3, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.5.3"), 1745, 1830, 10, "III"),
+  (@Seasonnumber * 18 - 6 + 17, 4, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.5.4"), 1830, 1915, 10, "II"),
+  (@Seasonnumber * 18 - 6 + 17, 5, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.5.5"), 1915, 2000, 10, "I"),
+  (@Seasonnumber * 18 - 6 + 18, 1, CONCAT("4v4_fs_season_", @Seasonnumber, ".subdivision.6.1"), 2000, 2850, 100, "");
\ No newline at end of file
diff --git a/service/season_generator.py b/service/season_generator.py
new file mode 100644
index 0000000..3ae19d3
--- /dev/null
+++ b/service/season_generator.py
@@ -0,0 +1,45 @@
+from datetime import datetime, timedelta
+
+import aiocron
+from sqlalchemy import select, text
+
+from service.config import SEASON_GENERATION_DAYS_BEFORE_SEASON_END
+from service.db import FAFDatabase
+from service.db.models import league_season
+from service.decorators import with_logger
+
+
+@with_logger
+class SeasonGenerator:
+    def __init__(self, database: FAFDatabase):
+        self._logger.info("Season generator created.")
+        self._db = database
+
+    def initialize(self):
+        self._update_cron = aiocron.crontab(
+            "0 0 * * *", func=self.check_season_end
+        )
+
+    async def check_season_end(self):
+        self._logger.debug("Checking if latest season ends soon.")
+        async with self._db.acquire() as conn:
+            sql = select([league_season])
+            result = await conn.execute(sql)
+            rows = await result.fetchall()
+
+            max_date = max(row[league_season.c.end_date] for row in rows)
+
+        if max_date < datetime.now() + timedelta(days=SEASON_GENERATION_DAYS_BEFORE_SEASON_END):
+            try:
+                await self.generate_season()
+            except Exception:
+                self._logger.exception("Failed to generate new season")
+            else:
+                self._logger.info("Season successfully created!")
+
+    async def generate_season(self):
+        self._logger.info("Generating new season...")
+        async with self._db.acquire() as conn:
+            with open("service/generate_season.sql") as file:
+                query = text(file.read())
+                await conn.execute(query)
diff --git a/tests/data/test-data.sql b/tests/data/test-data.sql
index ff97d65..2eab642 100644
--- a/tests/data/test-data.sql
+++ b/tests/data/test-data.sql
@@ -13,7 +13,9 @@ SET FOREIGN_KEY_CHECKS=1;
 
 insert into leaderboard (id, technical_name) values
   (1, "global"),
-  (2, "ladder_1v1");
+  (2, "ladder_1v1"),
+  (3, "tmm_2v2"),
+  (4, "tmm_4v4");
 
 INSERT INTO league (id, technical_name, enabled, image_url, medium_image_url, small_image_url, name_key, description_key) VALUES
   (1, "test_league", TRUE, "https://faf.com/", "https://faf.com/medium/", "https://faf.com/small/", "L1", "description_key"),
@@ -21,10 +23,10 @@ INSERT INTO league (id, technical_name, enabled, image_url, medium_image_url, sm
   (3, "league_without_seasons", TRUE, "https://faf.com/", "https://faf.com/medium/", "https://faf.com/small/", "L3", "description_key");
 
 INSERT INTO league_season (id, league_id, leaderboard_id, placement_games, placement_games_returning_player, season_number, name_key, start_date, end_date) VALUES
-  (1, 1, 1, 10, 3, 1, "season.1", NOW() - interval 2 year, NOW() - interval 1 year),
-  (2, 1, 1, 10, 3, 2, "season.2", NOW() - interval 1 year, NOW() + interval 1 year),
-  (3, 2, 2, 10, 3, 1, "season.3", NOW() - interval 2 year, NOW() + interval 1 year),
-  (4, 1, 1, 10, 3, 3, "season.4", NOW() + interval 1 year, NOW() + interval 2 year);
+  (1, 1, 1, 10, 3, 1, "season.1", NOW() - interval 2 week, NOW() - interval 1 week),
+  (2, 1, 1, 10, 3, 2, "season.2", NOW() - interval 1 week, NOW() + interval 1 week),
+  (3, 2, 2, 10, 3, 1, "season.3", NOW() - interval 2 week, NOW() + interval 1 week),
+  (4, 1, 1, 10, 3, 3, "season.4", NOW() + interval 1 week, NOW() + interval 2 week);
 
 INSERT INTO league_season_division (id, league_season_id, division_index, name_key, description_key) VALUES
   (1, 1, 1, "L1D1", "description_key"),
diff --git a/tests/unit_tests/test_league_service.py b/tests/unit_tests/test_league_service.py
index f46dbf4..7aba9f1 100644
--- a/tests/unit_tests/test_league_service.py
+++ b/tests/unit_tests/test_league_service.py
@@ -1,6 +1,3 @@
-import asyncio
-from contextlib import asynccontextmanager
-
 import pytest
 from asynctest import CoroutineMock
 from sqlalchemy import select
@@ -10,48 +7,10 @@
 from service.league_service.league_service import ServiceNotReadyError
 from service.league_service.typedefs import (InvalidScoreError, League,
                                              LeagueScore)
-from tests.utils import MockDatabase
 
 pytestmark = pytest.mark.asyncio
 
 
-@pytest.fixture
-def database_context():
-    @asynccontextmanager
-    async def make_database(request):
-        def opt(val):
-            return request.config.getoption(val)
-
-        host, user, pw, name, port = (
-            opt("--mysql_host"),
-            opt("--mysql_username"),
-            opt("--mysql_password"),
-            opt("--mysql_database"),
-            opt("--mysql_port")
-        )
-        db = MockDatabase(asyncio.get_running_loop())
-
-        await db.connect(
-            host=host,
-            user=user,
-            password=pw or None,
-            port=port,
-            db=name
-        )
-
-        yield db
-
-        await db.close()
-
-    return make_database
-
-
-@pytest.fixture
-async def database(request, database_context):
-    async with database_context(request) as db:
-        yield db
-
-
 @pytest.fixture
 async def league_service(database, message_queue_service):
     service = LeagueService(database, message_queue_service)
diff --git a/tests/unit_tests/test_season_generator.py b/tests/unit_tests/test_season_generator.py
new file mode 100644
index 0000000..f1ed8ae
--- /dev/null
+++ b/tests/unit_tests/test_season_generator.py
@@ -0,0 +1,64 @@
+from collections import Counter
+from datetime import datetime, timedelta
+
+import mock
+import pytest
+from freezegun import freeze_time
+from sqlalchemy import select
+
+from service.db.models import league_season, league_season_division
+from service.season_generator import SeasonGenerator
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.fixture
+def season_generator(database):
+    season_generator = SeasonGenerator(database)
+    season_generator.initialize()
+    return season_generator
+
+
+@freeze_time(datetime.now() - timedelta(days=5))
+async def test_early_season_check(season_generator):
+    season_generator.generate_season = mock.Mock()
+    await season_generator.check_season_end()
+    assert season_generator.generate_season.call_count == 0
+
+
+@freeze_time(datetime.now() + timedelta(days=5))
+async def test_late_season_check(season_generator):
+    season_generator.generate_season = mock.Mock()
+    await season_generator.check_season_end()
+    assert season_generator.generate_season.call_count == 1
+
+
+@freeze_time(datetime.now() + timedelta(days=20))
+async def test_season_check_after_season_end(season_generator):
+    season_generator.generate_season = mock.Mock()
+    await season_generator.check_season_end()
+    assert season_generator.generate_season.call_count == 1
+
+
+async def test_generate_season(season_generator, database):
+    await season_generator.generate_season()
+    async with database.acquire() as conn:
+        seasons = await conn.execute(select([league_season]))
+        rows = await seasons.fetchall()
+        assert len(rows) == 7
+        assert max(row[league_season.c.season_number] for row in rows) == 4
+
+        divisions = await conn.execute(select(league_season_division))
+        rows = await divisions.fetchall()
+        counter = Counter(row[league_season_division.c.description_key] for row in rows)
+        assert counter["1v1_season_4.division.1"] == 1
+
+
+async def test_generate_season_only_once(season_generator, database):
+    await season_generator.check_season_end()
+    await season_generator.check_season_end()
+    async with database.acquire() as conn:
+        seasons = await conn.execute(select([league_season]))
+        rows = await seasons.fetchall()
+        assert len(rows) == 7
+        assert max(row[league_season.c.season_number] for row in rows) == 4