#! /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 = ""
dbname = "worldbuild"
dbhost = "localhost"
force = False
use_sqlfile = True

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] == "-d" or sys.argv[i] == "--database":
		i += 1
		dbname = sys.argv[i]
	elif sys.argv[i] == "-h" or sys.argv[i] == "--host":
		i += 1
		dbhost = sys.argv[i]
	elif sys.argv[i] == "-f" or sys.argv[i] == "--force":
		force = True
	elif sys.argv[i] == "-N" or sys.argv[i] == "--no-sql":
		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("  -d, --database    Database to be initialised. Default: worldbuild")
		print("  -p, --password    Database password")
		print("  -u, --user        Database user")
		print("  -h, --host        Database host")
		print("  -f, --force       Recreates everything from scratch")
		print("  -N, --no-sql      Don't use the sql file and create the structure from scratch")
		print("                    Only recommended when underlaying tiling structure was changed")
		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)

#try:
if use_sqlfile:
else:
	states = [
		"pending",
		"started",
		"done",
		"packaged",
		"skip",
		"rebuild"
	]
	db = pymysql.connect(dbhost, dbuser, dbpw, dbname)

	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, color VARCHAR(20));")
	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));")
	cursor.execute("CREATE INDEX IF NOT EXISTS tile_index on tile(status_id, parent_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 = -83
	while lat < 83:
		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

	sql = "CREATE TABLE `auth` (`id` int(11) NOT NULL AUTO_INCREMENT, `token` varchar(100) NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `token` (`token`)) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8mb4"
	cursor.execute(sql)

	db.commit()

# Always create triggers via script cause there can be a user name conflict on import.
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 UPDATE secondLevel SET status_id = (SELECT status_id FROM tile JOIN status ON status_id = status.id WHERE tile.parent_id = NEW.parent_id ORDER BY priority ASC LIMIT 1) WHERE id = NEW.parent_id; 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 UPDATE topLevel SET status_id = (SELECT status_id FROM secondLevel JOIN status ON status_id = status.id WHERE secondLevel.parent_id = NEW.parent_id ORDER BY priority ASC LIMIT 1) WHERE id = NEW.parent_id; END')
cursor.execute(sql)
db.commit()

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