#! /usr/bin/python3
# Copyright (C) 2018-2020 Merspieler, merspieler _at_ airmail.cc
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

import pymysql
import sys
from common import norm, get_tile_width, get_tile, get_area_name

dbuser= ""
dbpw = ""
force = False

argc = len(sys.argv)
i = 1
while i < argc:
	if sys.argv[i] == "-p" or sys.argv[i] == "--password":
		i += 1
		dbpw = sys.argv[i]
	elif sys.argv[i] == "-u" or sys.argv[i] == "--user":
		i += 1
		dbuser = sys.argv[i]
	elif sys.argv[i] == "-f" or sys.argv[i] == "--force":
		force = True
	elif sys.argv[i] == "-h" or sys.argv[i] == "--help":
		print("usage: init-db.py [OPTIONS]")
		print("Initializes worldbuild status db")
		print("")
		print("OPTIONS")
		print("  -p, --password    Database password")
		print("  -u, --user        Database user")
		print("  -f, --force       Recreates everything from scratch")
		print("  -h, --help        Shows this help and exit")
		sys.exit(0)
	else:
		print("Unknown option " + sys.argv[i])
		sys.exit(1)
	i += 1

if dbuser == "":
	print("ERROR: No database user given")
	sys.exit(1)

if dbpw == "":
	print("ERROR: No database password given")
	sys.exit(1)

states = [
	"pending",
	"started",
	"done",
	"packaged",
	"skip",
	"rebuild"
]

#try:
db = pymysql.connect("localhost", dbuser, dbpw, "worldbuild")

cursor = db.cursor()

if force:
	cursor.execute("DROP TABLE IF EXISTS tile")
	cursor.execute("DROP TABLE IF EXISTS secondLevel")
	cursor.execute("DROP TABLE IF EXISTS topLevel")
	cursor.execute("DROP TABLE IF EXISTS status")
	cursor.execute("DROP TRIGGER IF EXISTS update_top_level")
	cursor.execute("DROP TRIGGER IF EXISTS update_second_level")

cursor.execute("CREATE TABLE IF NOT EXISTS status (id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(15) UNIQUE NOT NULL);")
cursor.execute("CREATE TABLE IF NOT EXISTS topLevel (id INT PRIMARY KEY AUTO_INCREMENT, name CHAR(7) UNIQUE NOT NULL, status_id INT NOT NULL, FOREIGN KEY (status_id) REFERENCES status(id));")
cursor.execute("CREATE TABLE IF NOT EXISTS secondLevel (id INT PRIMARY KEY AUTO_INCREMENT, name CHAR(7) UNIQUE NOT NULL, status_id INT NOT NULL, parent_id INT NOT NULL, FOREIGN KEY (status_id) REFERENCES status(id), FOREIGN KEY (parent_id) REFERENCES topLevel(id));")
cursor.execute("CREATE TABLE IF NOT EXISTS tile (id INT PRIMARY KEY AUTO_INCREMENT, status_id INT NOT NULL, parent_id INT NOT NULL, FOREIGN KEY (status_id) REFERENCES status(id), FOREIGN KEY (parent_id) REFERENCES secondLevel(id));")


for state in states:
	sql = "INSERT INTO status(name) VALUES ('" + state + "')"
	cursor.execute(sql)

sql = "SELECT id FROM status WHERE name='pending'"
cursor.execute(sql)
result = cursor.fetchall()
for row in result:
	sid = str(row[0])

print("Creating tile groups")
ii = -9
while ii < 9:
	i = ii * 10
	jj = -18
	while jj < 18:
		j = jj * 10
		major = get_area_name(i, j)

		sql = "INSERT INTO topLevel (name, status_id) VALUES ('" + major + "', " + sid + ");"
		cursor.execute(sql)

		sql = "SELECT id FROM topLevel WHERE name='" + major + "'"
		cursor.execute(sql)
		result = cursor.fetchall()
		for row in result:
			major_id = str(row[0])

		for k in range(0, 10):
			iii = i
			for l in range(0, 10):
				minor = get_area_name(iii, j)
				sql = "INSERT INTO secondLevel (parent_id, name, status_id) VALUES (" + major_id + ", '" + minor + "', " + sid + ")"
				cursor.execute(sql)
				iii += 1
			j += 1
		jj += 1
	ii += 1

print("Creating tiles")
lat = -90
while lat < 90:
	lon = -180
	while lon < 180:
		tile = get_tile(lat, lon)
		parent = get_area_name(lat, lon)
		sql="SELECT id FROM secondLevel WHERE name='" + parent + "'"
		cursor.execute(sql)
		result = cursor.fetchall()
		for row in result:
			pid = row[0]
		sql = "INSERT INTO tile (id, parent_id, status_id) VALUES (" + str(tile) + ", " + str(pid) + ", " + sid + ")"
		cursor.execute(sql)
		lon += get_tile_width(lat)
	lat += 0.125

db.commit()

# Get states
#SELECT status.name AS state, COUNT(status.name) AS occ FROM tile INNER JOIN status ON tile.status_id = status.id WHERE tile.parent_id = 400 GROUP BY status.name;

print("Creating triggers")

# Trigger for updating secondLevel on tile update
sql = ('CREATE OR REPLACE TRIGGER update_second_level '
'AFTER UPDATE ON tile '
'FOR EACH ROW '
'BEGIN '
	'IF (SELECT COUNT(status_id) FROM tile WHERE tile.parent_id = NEW.parent_id) = (SELECT COUNT(status_id) FROM tile WHERE tile.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "packaged")) THEN '
		'UPDATE secondLevel SET status_id = (SELECT id FROM status WHERE name = "packaged") WHERE id = NEW.parent_id; '
	'ELSEIF (SELECT COUNT(status_id) FROM tile WHERE tile.parent_id = NEW.parent_id) = (SELECT COUNT(status_id) FROM tile WHERE tile.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "done")) THEN '
		'UPDATE secondLevel SET status_id = (SELECT id FROM status WHERE name = "done") WHERE id = NEW.parent_id; '
	'ELSEIF (SELECT COUNT(status_id) FROM tile WHERE tile.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "started")) > 0 THEN '
		'UPDATE secondLevel SET status_id = (SELECT id FROM status WHERE name = "started") WHERE id = NEW.parent_id; '
	'ELSEIF (SELECT COUNT(status_id) FROM tile WHERE tile.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "rebuild")) > 0 THEN '
		'UPDATE secondLevel SET status_id = (SELECT id FROM status WHERE name = "rebuild") WHERE id = NEW.parent_id; '
	'ELSEIF (SELECT COUNT(status_id) FROM tile WHERE tile.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "skip")) > 0 THEN '
		'UPDATE secondLevel SET status_id = (SELECT id FROM status WHERE name = "skip") WHERE id = NEW.parent_id; '
	'ELSE '
		'UPDATE secondLevel SET status_id = (SELECT id FROM status WHERE name = "pending") WHERE id = NEW.parent_id; '
	'END IF; '
'END; ')
cursor.execute(sql)

# Trigger for updating topLevel on secondLevel update
sql = ('CREATE OR REPLACE TRIGGER update_top_level '
'AFTER UPDATE ON secondLevel '
'FOR EACH ROW '
'BEGIN '
	'IF (SELECT COUNT(status_id) FROM secondLevel WHERE secondLevel.parent_id = NEW.parent_id) = (SELECT COUNT(status_id) FROM secondLevel WHERE secondLevel.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "packaged")) THEN '
		'UPDATE topLevel SET status_id = (SELECT id FROM status WHERE name = "packaged") WHERE id = NEW.parent_id; '
	'ELSEIF (SELECT COUNT(status_id) FROM secondLevel WHERE secondLevel.parent_id = NEW.parent_id) = (SELECT COUNT(status_id) FROM secondLevel WHERE secondLevel.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "done")) THEN '
		'UPDATE topLevel SET status_id = (SELECT id FROM status WHERE name = "done") WHERE id = NEW.parent_id; '
	'ELSEIF (SELECT COUNT(status_id) FROM secondLevel WHERE secondLevel.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "started")) > 0 THEN '
		'UPDATE topLevel SET status_id = (SELECT id FROM status WHERE name = "started") WHERE id = NEW.parent_id; '
	'ELSEIF (SELECT COUNT(status_id) FROM secondLevel WHERE secondLevel.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "rebuild")) > 0 THEN '
		'UPDATE topLevel SET status_id = (SELECT id FROM status WHERE name = "rebuild") WHERE id = NEW.parent_id; '
	'ELSEIF (SELECT COUNT(status_id) FROM secondLevel WHERE secondLevel.parent_id = NEW.parent_id AND status_id = (SELECT id FROM status WHERE name = "skip")) > 0 THEN '
		'UPDATE topLevel SET status_id = (SELECT id FROM status WHERE name = "skip") WHERE id = NEW.parent_id; '
	'ELSE '
		'UPDATE topLevel SET status_id = (SELECT id FROM status WHERE name = "pending") WHERE id = NEW.parent_id; '
	'END IF; '
'END; ')
cursor.execute(sql)
db.commit()

#except:
#	db.rollback()
#	print("Failed to setup database...")
#finally:
db.close()