78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
from flask import Flask, request, render_template
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from typing import TypedDict
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import configparser
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import sqlite3
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import os
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class Config(TypedDict):
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dbPath: str
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def parseConfig() -> Config:
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cfg_path = os.environ.get("CONFIG", "/etc/ftth-ipe-map/conf.ini")
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cfg = configparser.ConfigParser()
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with open(cfg_path, "r") as f:
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cfg.read_file(f)
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return {'dbPath':cfg.get("DB","path")}
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app = Flask(__name__)
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cfg:Config = parseConfig()
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@app.route("/", methods=["GET"])
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def getMap():
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return render_template("map.html")
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@app.route("/eligdata", methods=["GET"])
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def getEligData():
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args = request.args
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valid_args = True
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processed_args = {}
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for k in ['swx', 'swy', 'nex', 'ney']:
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valid_args = valid_args and k in args
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if valid_args:
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try:
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processed_args[k] = float(args[k])
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except ValueError:
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valid_args = False
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if valid_args:
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cur = cursorWithSpatialite()
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# Let's first see how big is the area we're about to query.
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# If it's too big, abort the request to prevent a server DOS.
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cur.execute('''
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SELECT Area(BuildMBR(:swx,:swy,:nex,:ney,4326))
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''',processed_args)
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req_area = cur.fetchone()[0]
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if req_area <= 0.08:
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cur.execute('''
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SELECT
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X(ImmeubleGeoPoint),
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Y(ImmeubleGeoPoint),
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IdentifiantImmeuble,
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EtatImmeuble,
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NumeroVoieImmeuble,
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TypeVoieImmeuble,
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NomVoieImmeuble
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FROM ipe
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WHERE ROWID IN (
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SELECT ROWID FROM SpatialIndex
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WHERE f_table_name = 'ipe' AND
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search_frame = BuildMBR(:swx, :swy, :nex, :ney, 4326))
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''',processed_args)
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buildings = [ {
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'x':b[0], 'y':b[1], 'idImm':b[2],
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'etatImm':b[3], 'numVoieImm': b[4],
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'typeVoieImm': b[5], 'nomVoieImm': b[6]
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} for b in cur.fetchall()]
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return { "buildings": buildings}
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else:
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return "The requested area is too wide, please reduce it", 400
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else:
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return "Invalid bounding box coordinates", 400
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def cursorWithSpatialite():
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db = sqlite3.connect(cfg['dbPath'])
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cur = db.cursor()
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db.enable_load_extension(True)
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cur.execute('SELECT load_extension("mod_spatialite")')
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return cur
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