Revamped project init

New repo for larger structural changes from Sensor-Server. Currently
doing most all the same stuff but hopefully better. Still have to clean
out some of the older templates for the new interface

16 files changed, 1667 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1878045
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.venv/
+*.pyc
+__pycache__/
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a737dcf
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,675 @@
+
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+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..529c648
--- /dev/null
+++ b/README.md
@@ -0,0 +1,12 @@
+# Sensor Aggregator
+## _snag_
+
+A small Flask based server for all sorts of sensor data aggregation
+
+Now with
+ * Slightly less ugly code
+ * Endpoint for inputing complicated JSON data
+ * Minimal backwards compatability
+ * _Even more graphs!_
+ * and not much else
+
diff --git a/snag/__init__.py b/snag/__init__.py
new file mode 100644
index 0000000..c0b936f
--- /dev/null
+++ b/snag/__init__.py
@@ -0,0 +1,41 @@
+# snag
+# Matt Kohls
+# (c) 2023
+
+import os
+
+from flask import Flask
+
+def create_app(test_config=None):
+    # create and configure the app
+    app = Flask(__name__, instance_relative_config=True)
+    app.config.from_mapping(
+        SECRET_KEY='development_key',
+        DATABASE=os.path.join(app.instance_path, 'snag.sqlite'),
+    )
+
+    # probably not going to mess with test stuff but just in case
+    if test_config is None:
+        # load the instance config, if it exists, when not testing
+        app.config.from_pyfile('config.py', silent=True)
+    else:
+        # load the test config if passed in
+        app.config.from_mapping(test_config)
+
+    # ensure the instance folder exists
+    try:
+        os.makedirs(app.instance_path)
+    except OSError:
+        pass
+
+    from . import db
+    db.init_app(app)
+
+    from . import graphs, data, dashboard
+    app.register_blueprint(graphs.bp)
+    app.register_blueprint(data.bp)
+    app.register_blueprint(dashboard.bp)
+    app.add_url_rule('/', endpoint='dashboard')
+
+    return app
+
diff --git a/snag/dashboard.py b/snag/dashboard.py
new file mode 100644
index 0000000..7e77124
--- /dev/null
+++ b/snag/dashboard.py
@@ -0,0 +1,26 @@
+# snag
+# Matt Kohls
+# (c) 2023
+
+from flask import (
+    Blueprint, flash, g, redirect, render_template, request, url_for
+)
+from werkzeug.exceptions import abort
+from datetime import datetime
+from snag.db import get_db
+
+bp = Blueprint('dashboard', __name__)
+
+@bp.route('/')
+def dashboard():
+    db = get_db()
+
+    rows = db.execute(
+        'SELECT de.deviceId, de.environment, d.deviceName'
+        ' FROM device_env de JOIN devices d ON de.deviceId = d.deviceId'
+        ' ORDER BY entry DESC'
+    ).fetchall()
+
+    deviceList = [dict(deviceId=row['deviceId'], location=row['environment'], name=row['deviceName']) for row in rows]
+    return render_template('dashboard/dashboard.html', deviceList=deviceList, generatedAt=datetime.now())
+
diff --git a/snag/data.py b/snag/data.py
new file mode 100644
index 0000000..3bf8df3
--- /dev/null
+++ b/snag/data.py
@@ -0,0 +1,116 @@
+# snag
+# Matt Kohls
+# (c) 2023
+
+from flask import (
+    Blueprint, flash, g, redirect, render_template, request, url_for, json
+)
+from werkzeug.exceptions import abort
+from datetime import datetime
+from snag.db import get_db
+
+bp = Blueprint('data', __name__, url_prefix='/data')
+
+# Process json data
+#
+# Expects something like this:
+# {
+#  "scheme": "1",
+#  "deviceId": 1,
+#  "readings": [
+#    {
+#      "env": "outdoor",
+#      "temp": 123
+#    },
+#    {
+#      "env": "enclosed",
+#      "temp": 456
+#    }
+#  ],
+#  "status": [
+#    {
+#      "heater": "off",
+#      "battery": 10
+#    }
+#  ]
+# }
+def unpack_json_scheme_1(req):
+    try:
+        deviceId = req['deviceId']
+        db = get_db()
+
+        # Status only has one object in it, and is optional
+        if 'status' in req:
+            if 'timeStamp' in req['status'][0]:
+                now = req['status'][0]['timeStamp']
+            else:
+                now = datetime.now()
+            battery = req['status'][0]['battery']
+            heater = req['status'][0]['heater']
+            db.execute('INSERT INTO device_status (date, deviceId, batteryCharge, heaterRunning) VALUES (?, ?, ?, ?)', [now, deviceId, battery, heater])
+
+        for environment in req['readings']:
+            env = environment['environment']
+            temp = environment['temperature']
+            humidity = environment['humidity']
+            pressure = environment['pressure']
+            now = environment['timeStamp']
+            if env == 'outdoor':
+                lux = environment['lux']
+                uv = environment['uv']
+                db.execute('INSERT INTO env_outdoor (date, deviceId, temperature, humidity, pressure, lux, uv_intensity) VALUES (?, ?, ?, ?, ?, ?, ?)', [now, deviceId, temp, humidity, pressure, lux, uv])
+            elif env == 'indoor':
+                db.execute('INSERT INTO env_indoor (date, deviceId, temperature, humidity, pressure) VALUES (?, ?, ?, ?, ?)', [now, deviceId, temp, humidity, pressure])
+            elif env == 'enclosed':
+                light = environment['light']
+                db.execute('INSERT INTO env_enclosed (date, deviceId, temperature, humidity, pressure, light) VALUES (?, ?, ?, ?, ?, ?)', [now, deviceId, temp, humidity, pressure, light])
+            else:
+                raise 'Bad reading environment'
+
+        db.commit()
+
+    except Exception as err:
+        print(err)
+        return "Bad JSON", 400
+
+    return "Data received", 200
+
+@bp.route('/json', methods=['POST'])
+def add_json_data():
+    if request.is_json:
+        req = request.get_json()
+        if 'scheme' in req:
+            if req['scheme'] == '1':
+                return unpack_json_scheme_1(req)
+            else:
+                abort(400, "Unknown scheme")
+        else:
+            abort(400, "Unknown JSON")
+
+    else:
+        abort(400, "Unknown payload type")
+
+@bp.route('/devices', methods=['GET'])
+def get_devices():
+    db = get_db()
+
+    out = []
+    devices = db.execute('SELECT * FROM devices ORDER BY deviceId').fetchall()
+    for device in devices:
+        envList = []
+        envs = db.execute('SELECT * FROM device_env WHERE deviceId = ?', [device['deviceId']]).fetchall()
+        for env in envs:
+            envDict = {
+                    "environment" : env["environment"],
+           #         "environmentDesc" : env["environmentDescription"]
+                    }
+            envList.append(envDict)
+        deviceLine = {
+                "deviceId" : device["deviceId"],
+                "deviceName" : device["deviceName"],
+                "deviceDescription" : device["deviceLocation"]
+                }
+        deviceLine['environments'] = envList
+        out.append(deviceLine)
+    return out
+
diff --git a/snag/db.py b/snag/db.py
new file mode 100644
index 0000000..56e3306
--- /dev/null
+++ b/snag/db.py
@@ -0,0 +1,41 @@
+# snag
+# Matt Kohls
+# (c) 2023
+
+import sqlite3
+
+import click
+from flask import current_app, g
+
+def get_db():
+    if 'db' not in g:
+        g.db = sqlite3.connect(
+            current_app.config['DATABASE'],
+            detect_types=sqlite3.PARSE_DECLTYPES
+        )
+        g.db.row_factory = sqlite3.Row
+
+    return g.db
+
+def close_db(e=None):
+    db = g.pop('db', None)
+
+    if db is not None:
+        db.close()
+
+def init_db():
+    db = get_db()
+
+    with current_app.open_resource('schema.sql') as f:
+        db.executescript(f.read().decode('utf8'))
+
+@click.command('init-db')
+def init_db_command():
+    """Clear the existing data and create new tables."""
+    init_db()
+    click.echo('Initialized the database.')
+
+def init_app(app):
+    app.teardown_appcontext(close_db)
+    app.cli.add_command(init_db_command)
+
diff --git a/snag/graphs.py b/snag/graphs.py
new file mode 100644
index 0000000..2905d20
--- /dev/null
+++ b/snag/graphs.py
@@ -0,0 +1,315 @@
+# snag
+# Matt Kohls
+# (c) 2023
+
+import functools
+from flask import (
+    Blueprint, flash, g, redirect, render_template, request, session, url_for, Response
+)
+from werkzeug.exceptions import abort
+from datetime import datetime, timedelta
+from dateutil import parser
+from io import BytesIO
+from matplotlib.figure import Figure
+import matplotlib.dates as mdates
+from snag.db import get_db
+
+bp = Blueprint('graph', __name__, url_prefix='/graph')
+
+def get_table(env):
+    if env == 'outdoor':
+        return 'env_outdoor'
+    elif env == 'indoor':
+        return 'env_indoor'
+    elif env == 'enclosed':
+        return 'env_enclosed'
+    else:
+        return None
+
+def get_current(requestArgs, columns, table):
+    # start and end should be formatted YYYYMMDDHHMMSS
+    start = requestArgs.get('start')
+    end = requestArgs.get('end')
+    env = requestArgs.get('type')
+    deviceId = request.args.get('deviceId')
+
+    # Sets default dates of information to be fetched, starttime will default to one day behind endtime, which defaults to now
+    if end is None:
+        endtime = datetime.now()
+    else:
+        endtime = datetime.strptime(end, "%Y%m%d%H%M%S")
+    if start is None:
+        starttime = endtime - timedelta(days=1)
+    else:
+        starttime = datetime.strptime(start, "%Y%m%d%H%M%S")
+
+    if endtime < starttime:
+        temp = starttime
+        starttime = endtime
+        endtime = temp
+
+    if deviceId is None:
+        deviceId = 1
+
+    db = get_db()
+
+    if table is not None:
+        sql = (f"SELECT {columns} "
+               f"FROM {table} "
+                "WHERE (date BETWEEN ? AND ?) AND deviceId = ?")
+        subset = db.execute(sql, [starttime, endtime, deviceId])
+    else:
+        subset = None
+
+    return subset
+
+def single_line_graph(xData, yData, xLabel, yLabel, title, lineColor):
+    fig = Figure()
+    ax = fig.subplots()
+    locator = mdates.AutoDateLocator(minticks=3, maxticks=7)
+    formatter = mdates.ConciseDateFormatter(locator)
+
+    ax.xaxis.set_major_locator(locator)
+    ax.xaxis.set_major_formatter(formatter)
+    ax.plot(xData, yData, color=lineColor)
+    ax.set_xlabel(xLabel)
+    ax.set_ylabel(yLabel)
+    ax.set_title(title)
+
+    buf = BytesIO()
+    fig.savefig(buf, format="png")
+
+    return buf
+
+def double_line_graph(xData, yData1, yData2, xLabel, yLabel1, yLabel2, title, line1Color, line2Color, line1Label, line2Label):
+    fig = Figure()
+    ax = fig.subplots()
+    bx = ax.twinx()
+    locator = mdates.AutoDateLocator(minticks=3, maxticks=7)
+    formatter = mdates.ConciseDateFormatter(locator)
+
+    ax.xaxis.set_major_locator(locator)
+    ax.xaxis.set_major_formatter(formatter)
+    bx.xaxis.set_major_locator(locator)
+    bx.xaxis.set_major_formatter(formatter)
+    aline, = ax.plot(xData, yData1, color=line1Color, label=line1Label)
+    ax.set_xlabel(xLabel)
+    ax.set_ylabel(yLabel1)
+    ax.set_title(title)
+    bline, = bx.plot(xData, yData2, color=line2Color, label=line2Label)
+    bx.set_ylabel(yLabel2)
+
+    lines = [aline, bline]
+    ax.legend(lines, [l.get_label() for l in lines])
+
+    buf = BytesIO()
+    fig.savefig(buf, format="png")
+
+    return buf
+
+def double_y_graph(xData, yData1, yData2, xLabel, yLabel1, yLabel2, title, line1Color):
+    fig = Figure()
+    ax = fig.subplots()
+    bx = ax.twinx()
+    locator = mdates.AutoDateLocator(minticks=3, maxticks=7)
+    formatter = mdates.ConciseDateFormatter(locator)
+
+    ax.xaxis.set_major_locator(locator)
+    ax.xaxis.set_major_formatter(formatter)
+    bx.xaxis.set_major_locator(locator)
+    bx.xaxis.set_major_formatter(formatter)
+    ax.plot(xData, yData1, color=line1Color)
+    ax.set_xlabel(xLabel)
+    ax.set_ylabel(yLabel1)
+    ax.set_title(title)
+    bx.plot(xData, yData2, visible=False)
+    bx.set_ylabel(yLabel2)
+
+    buf = BytesIO()
+    fig.savefig(buf, format="png")
+
+    return buf
+
+@bp.route('/temperature.png', methods=['GET'])
+def draw_t_graph():
+    cur = get_current(request.args, "date, temperature", get_table(request.args['type']))
+
+    if cur is None:
+        abort(404, "Data not found")
+
+    data = cur.fetchall()
+    dates = []
+    tempsC = []
+    tempsF = []
+
+    if data is None:
+        abort(404, "Data not found")
+
+    for row in data:
+        if isinstance(row['date'], str):
+            dates.append(parser.parse(row['date']))
+        else:
+            dates.append(row['date'])
+        tempsC.append(row['temperature'])
+        tempsF.append(row['temperature'] * 1.8 + 32)
+
+    buf = double_y_graph(dates, tempsC, tempsF, "Timestamps", "Celsius", "Fahrenheit", "Temperature", "C1")
+
+    return Response(buf.getvalue(), mimetype='image/png')
+
+@bp.route('/humidity.png', methods=['GET'])
+def draw_h_graph():
+    cur = get_current(request.args, "date, humidity", get_table(request.args['type']))
+
+    if cur is None:
+        abort(404, "Data not found")
+
+    data = cur.fetchall()
+    dates = []
+    humidities = []
+
+    if data is None:
+        abort(404, "Data not found")
+
+    for row in data:
+        if isinstance(row['date'], str):
+            dates.append(parser.parse(row['date']))
+        else:
+            dates.append(row['date'])
+        humidities.append(row['humidity'])
+
+    buf = single_line_graph(dates, humidities, "Timestamps", "Percent", "Relative Humidity", "C0")
+
+    return Response(buf.getvalue(), mimetype='image/png')
+
+@bp.route('/humidity-temperature.png', methods=['GET'])
+def draw_ht_graph():
+    cur = get_current(request.args, "date, temperature, humidity", get_table(request.args['type']))
+
+    if cur is None:
+        abort(404, "Data not found")
+
+    data = cur.fetchall()
+    dates = []
+    humidities = []
+    #tempsC = []
+    tempsF = []
+
+    if data is None:
+        abort(404, "Data not found")
+
+    for row in data:
+        if isinstance(row['date'], str):
+            dates.append(parser.parse(row['date']))
+        else:
+            dates.append(row['date'])
+    #    tempsC.append(row['temperature'])
+        tempsF.append(row['temperature'] * 1.8 + 32)
+        humidities.append(row['humidity'])
+
+    buf = double_line_graph(dates, humidities, tempsF, "Timestamps", "Percent", "Fahrenheit", "Humidity and Temperature", "C0", "C1", "Relative Humidity", "Temperature")
+
+    return Response(buf.getvalue(), mimetype='image/png')
+
+@bp.route('/pressure.png', methods=['GET'])
+def draw_p_graph():
+    cur = get_current(request.args, "date, pressure", get_table(request.args['type']))
+
+    if cur is None:
+        abort(404, "Data not found")
+
+    data = cur.fetchall()
+    dates = []
+    pressures = []
+
+    if data is None:
+        abort(404, "Data not found")
+
+    for row in data:
+        if isinstance(row['date'], str):
+            dates.append(parser.parse(row['date']))
+        else:
+            dates.append(row['date'])
+        pressures.append(row['pressure'])
+
+    buf = single_line_graph(dates, pressures, "Timestamps", "hPa", "Barometric Pressure", "C2")
+
+    return Response(buf.getvalue(), mimetype='image/png')
+
+@bp.route('/battery.png', methods=['GET'])
+def draw_b_graph():
+    cur = get_current(request.args, "date, batteryCharge", "device_status")
+
+    if cur is None:
+        abort(404, "Data not found")
+
+    data = cur.fetchall()
+    dates = []
+    batteries = []
+
+    if data is None:
+        abort(404, "Data not found")
+
+    for row in data:
+        if isinstance(row['date'], str):
+            dates.append(parser.parse(row['date']))
+        else:
+            dates.append(row['date'])
+        batteries.append(row['batteryCharge'])
+
+    buf = single_line_graph(dates, batteries, "Timestamps", "Volts", "Battery Voltage", "C3")
+
+    return Response(buf.getvalue(), mimetype='image/png')
+
+@bp.route('/light.png', methods=['GET'])
+def draw_l_graph():
+    env = request.args['type']
+
+    if (env is not None) and (env == 'outdoor'):
+        cur = get_current(request.args, "date, uv_intensity, lux", get_table(env))
+
+        if cur is None:
+            abort(404, "Data not found")
+
+        data = cur.fetchall()
+
+        if data is None:
+            abort(404, "Data not found")
+
+        dates = []
+        uv = []
+        lux = []
+        for row in data:
+            if isinstance(row['date'], str):
+                dates.append(parser.parse(row['date']))
+            else:
+                dates.append(row['date'])
+            uv.append(row['uv_intensity'])
+            lux.append(row['lux'])
+
+        buf = double_line_graph(dates, uv, lux, "Timestamps", "UV Index", "Lux", "UV and Light Intensity", "C4", "C5", "UV Light", "Light Intensity")
+
+    else:
+        cur = get_current(request.args, "date, light", get_table(env))
+
+        if cur is None:
+            abort(404, "Data not found")
+
+        data = cur.fetchall()
+
+        if data is None:
+            abort(404, "Data not found")
+
+        dates = []
+        light = []
+        for row in data:
+            if isinstance(row['date'], str):
+                dates.append(parser.parse(row['date']))
+            else:
+                dates.append(row['date'])
+            light.append(row['light'])
+
+        buf = single_line_graph(dates, light, "Timestamps", "Raw Light Reading", "Light Intensity", "C5")
+
+    return Response(buf.getvalue(), mimetype='image/png')
+
diff --git a/snag/schema.sql b/snag/schema.sql
new file mode 100644
index 0000000..9c4dfda
--- /dev/null
+++ b/snag/schema.sql
@@ -0,0 +1,46 @@
+create table devices (
+	deviceId integer primary key autoincrement,
+	deviceName text,
+	deviceLocation text
+);
+create table device_env (
+	entry integer primary key autoincrement,
+	deviceId integer,
+	environment text,
+	environmentDescription text
+);
+create table env_outdoor (
+    entry integer primary key autoincrement,
+    date timestamp,
+	deviceId integer,
+	temperature real,
+	humidity real,
+	pressure real,
+	lux real,
+	uv_intensity real
+);
+create table env_indoor (
+    entry integer primary key autoincrement,
+    date timestamp,
+	deviceId integer,
+	temperature real,
+	humidity real,
+	pressure real
+);
+create table env_enclosed (
+    entry integer primary key autoincrement,
+    date timestamp,
+	deviceId integer,
+	temperature real,
+	humidity real,
+	pressure real,
+	light real
+);
+create table device_status (
+    entry integer primary key autoincrement,
+    date timestamp,
+	deviceId integer,
+	batteryCharge real,
+	heaterRunning integer
+);
+
diff --git a/snag/static/interactive.js b/snag/static/interactive.js
new file mode 100644
index 0000000..de44670
--- /dev/null
+++ b/snag/static/interactive.js
@@ -0,0 +1,64 @@
+/**
+ * Script to change the shown graph
+ * 
+ * Matt Kohls
+ * 2021
+ */
+
+const form = document.getElementById('query');
+const submitButton = document.getElementById('submit');
+const figure = document.getElementById('figure');
+
+function sendRequest(data) {
+	let url = "/",
+		urlEncoded = "",
+		urlEncodedPairs = [],
+		name,
+		startDate,
+		startTime,
+		endDate,
+		endTime;
+
+	for (name of data) {
+		switch (name[0]) {
+			case 'graph':
+				url = url.concat(name[1]);
+				break;
+			case 'sd':
+				startDate = name[1].replace(/-/g, '');
+				break;
+			case 'st':
+				startTime = name[1].replace(/:/g, '').concat('00');
+			case 'ed':
+				endDate = name[1].replace(/-/g, '');
+				break;
+			case 'et':
+				endTime = name[1].replace(/:/g, '').concat('00');
+				break;
+			case 'deviceId':
+			default:
+				urlEncodedPairs.push(name[0] + '=' + name[1]);
+		}
+	}
+	if (startDate !== "") {
+	    if (startTime === "00") {
+		startTime = "000000";
+	    } 
+	    urlEncodedPairs.push('start=' + startDate + startTime);
+	}
+	if (endDate !== "") {
+	    if (endTime === "00") {
+		endTime = "000000";
+	    }
+	    urlEncodedPairs.push('end=' + endDate + endTime);
+	}
+
+	urlEncoded = urlEncodedPairs.join('&');
+	figure.setAttribute('src', url + '?' + urlEncoded);
+}
+
+submitButton.addEventListener('click', function() {
+	const formData = new FormData(form);
+	sendRequest(formData);
+})
+
diff --git a/snag/static/pagedown.css b/snag/static/pagedown.css
new file mode 100644
index 0000000..7f9c3e0
--- /dev/null
+++ b/snag/static/pagedown.css
@@ -0,0 +1,155 @@
+@font-face {
+ font-family: "Courier 10 Pitch";
+ src: url(/fonts/courier10bt-regular.woff);
+ font-weight: normal;
+ font-style: normal;
+}
+
+@font-face {
+ font-family: "Courier 10 Pitch";
+ src: url(/fonts/courier10bt-bold.woff);
+ font-weight: bold;
+ font-style: normal;
+}
+
+@font-face {
+ font-family: "Courier 10 Pitch";
+ src: url(/fonts/courier10bt-italic.woff);
+ font-weight: normal;
+ font-style: italic;
+}
+
+@font-face {
+ font-family: "Courier 10 Pitch";
+ src: url(/fonts/courier10bt-bolditalic.woff);
+ font-weight: bold;
+ font-style: italic;
+}
+
+@font-face {
+ font-family: Literata;
+ src: url(/fonts/Literata-Regular.woff)
+ font-weight: normal;
+ font-style: normal;
+}
+
+@font-face {
+ font-family: Literata;
+ src: url(/fonts/Literata-Bold.woff)
+ font-weight: bold;
+ font-style: normal;
+}
+
+@font-face {
+ font-family: Literata;
+ src: url(/fonts/Literata-Italic.woff)
+ font-weight: normal;
+ font-style: italic;
+}
+
+@font-face {
+ font-family: Literata;
+ src: url(/fonts/Literata-BoldItalic.woff)
+ font-weight: bold;
+ font-style: italic;
+}
+
+html, body {
+ min-height: 100%;
+ height: 100%;
+ margin: 1em
+}
+
+body {
+ color: #212529;
+ background-color: #fff;
+ font-family: "Nimbus Sans L", Helvetica, sans-serif;
+}
+
+img, video {
+ display: block;
+ max-width: 80%;
+ box-shadow: 1px 1px 5px 0 rgba(0,0,0,.4);
+ margin: 0 auto
+}
+
+figcaption {
+  text-align: center;
+  margin: 0 auto
+}
+
+pre {
+ font-family: "Courier 10 Pitch", Courier, monospace;
+ background: #eee;
+ padding: .5rem;
+ margin: 0 -.5rem;
+ overflow-x: auto
+}
+
+nav {
+ margin: 0 auto;
+ clear: both
+}
+
+nav a:not(:first-child) {
+ margin-left: 1rem
+}
+
+nav .brand {
+ font-size: 1.25rem;
+ position: relative;
+ top: 1px
+}
+
+label {
+ display: inline-block;
+ margin-bottom: .25rem
+}
+
+aside {
+  border-left-style: dotted;
+  padding: 1em
+}
+
+h1 {
+ font-family: Literata, serif;
+}
+
+h2 {
+ font-family: Literata, serif;
+}
+
+h3 {
+ font-family: Literata, serif;
+}
+
+h4 {
+ font-family: Literata, serif;
+}
+
+header {
+ width: 50%;
+ margin-top: .5rem;
+}
+
+table {
+ border-collapse: collapse;
+ border: 0px
+}
+
+th {
+ border-bottom: 1px solid  #212121
+}
+
+th, td {
+ padding: 5px;
+}
+
+tr:nth-child(even) {
+ background-color: #f6f6f6
+}
+
+footer {
+ width: 50%;
+ margin: 0 0 1rem
+}
diff --git a/snag/static/style.css b/snag/static/style.css
new file mode 100644
index 0000000..da1cb34
--- /dev/null
+++ b/snag/static/style.css
@@ -0,0 +1,18 @@
+body            { font-family: sans-serif; background: #eee; }
+a, h1, h2       { color: #377ba8; }
+h1, h2          { font-family: 'Georgia', serif; margin: 0; }
+h1              { border-bottom: 2px solid #eee; }
+h2              { font-size: 1.2em; }
+
+.page           { margin: 2em auto; width: 35em; border: 5px solid #ccc;
+                  padding: 0.8em; background: white; }
+.weather        { list-style: none; margin: 0; padding: 0; }
+.weather li     { margin: 0.8em 1.2em; }
+.weather li h2  { margin-left: -1em; }
+.add-entry      { font-size: 0.9em; border-bottom: 1px solid #ccc; }
+.add-entry dl   { font-weight: bold; }
+.metanav        { text-align: right; font-size: 0.8em; padding: 0.3em;
+                  margin-bottom: 1em; background: #fafafa; }
+.flash          { background: #cee5F5; padding: 0.5em;
+                  border: 1px solid #aacbe2; }
+.error          { background: #f0d6d6; padding: 0.5em; }
diff --git a/snag/templates/dashboard/dashboard.html b/snag/templates/dashboard/dashboard.html
new file mode 100644
index 0000000..c061b66
--- /dev/null
+++ b/snag/templates/dashboard/dashboard.html
@@ -0,0 +1,43 @@
+{% extends 'layout.html' %}
+
+{% block headline %}{% block title %}Dashboard{% endblock %}{% endblock %}
+
+{% block content %}
+<main>
+	{% if deviceList|length == 0 %}
+Hmmm nothing seems to be logged yet
+	{% endif %}
+	{% for entry in deviceList %}
+
+ 	<h2> {{ entry.name }} | {{ entry.location }} </h2>
+	<table>
+		<tr>
+			{% if entry.location != "status" %}
+			<td>
+				<figure>
+					<embed type="image/png" src="/graph/humidity-temperature.png?deviceId={{ entry.deviceId }}&type={{ entry.location}}" />
+				</figure>
+			</td>
+
+			<td>
+				<figure>
+					<embed type="image/png" src="/graph/pressure.png?deviceId={{ entry.deviceId }}&type={{ entry.location}}" />
+				</figure>
+			</td>
+			{% else %}
+			<td>
+				<figure>
+					<embed type="image/png" src="/graph/battery.png?deviceId={{ entry.deviceId }}" />
+				</figure>
+			</td>
+			{% endif %}
+		</tr>
+	  
+	</table>
+
+	{% endfor %}
+
+</main>
+{% endblock %}
+
+{% block footer %} Best by: {{ generatedAt }} {% endblock %}
diff --git a/snag/templates/interactive.html b/snag/templates/interactive.html
new file mode 100644
index 0000000..1756865
--- /dev/null
+++ b/snag/templates/interactive.html
@@ -0,0 +1,39 @@
+{% extends "layout.html" %}
+{% block body %}
+    <form id="query">
+    <p>
+	<label>Location</label>
+	<select id="deviceId" name="deviceId">
+	    <option value="1">Bedroom</option>
+	    <option value="2">Mainfloor</option>
+	</select>
+    </p>
+    <p>
+	<label>Graph Type</label>
+	<select id="graph" name="graph">
+	    <option value="htgraph.png">Humidity &amp; Temperature</option>
+	    <option value="tgraph.png">Temperature</option>
+	    <option value="hgraph.png">Humidity</option>
+	    <option value="pgraph.png">Pressure</option>
+	    <option value="bgraph.png">Battery</option>
+	</select>
+    </p>
+    <p>
+	<label>Start Date</label>
+	<input type="date" name="sd" id="sd">
+	<input type="time" name="st" id="st">
+    </p>
+    <p>
+	<label>End Date</label>
+	<input type="date" name="ed" id="ed">
+	<input type="time" name="et" id="et">
+    </p>
+    </form>
+    <button id='submit'>Submit</button>
+
+    <figure>
+	<embed id="figure" type="image/png" src="/htgraph.png?deviceId=2" />
+    </figure>
+
+    <script src="static/interactive.js"></script>
+{% endblock %}
diff --git a/snag/templates/layout.html b/snag/templates/layout.html
new file mode 100644
index 0000000..50ad57b
--- /dev/null
+++ b/snag/templates/layout.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html lang="en-US">
+	<head>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, initial-scale=1">
+		<title>snag | {% block title %}{% endblock %}</title>
+		<link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='pagedown.css') }}">
+	</head>
+
+	<body>
+		<header>
+			<nav>
+				<a href="/">Dashboard</a> <a href="interactive">Interactive</a>
+			</nav>
+			<hr>
+		</header>
+		<h1> {% block headline %}{% endblock %} </h1>
+		<hr>
+
+		{% block content %}{% endblock %}
+
+		<footer>
+			<hr>
+			<p>
+				{% block footer %}{% endblock %}
+			</p>
+		</footer>
+	</body>
+</html>
diff --git a/snag/templates/show_entries.html b/snag/templates/show_entries.html
new file mode 100644
index 0000000..86451df
--- /dev/null
+++ b/snag/templates/show_entries.html
@@ -0,0 +1,44 @@
+{% extends "layout.html" %}
+{% block body %}
+    <aside>
+	<b>{% if devId == 1 %}Bedroom
+	   {% else %}Mainfloor
+	   {% endif %}Currently:</b>
+	<ul class=current>
+	    <li>{{ current.temperature }}&#176;F</li>
+	    <li>{{ current.humidity }}% humidity</li>
+	</ul>
+    </aside>
+    <figure>
+	<embed type="image/png" src="/htgraph.png?deviceId={{ devId }}" />
+    </figure>
+    <figure>
+	<embed type="image/png" src="/pgraph.png?deviceId={{ devId }}" />
+    </figure>
+    {% if devId == 2 %}
+    <figure>
+	<embed type="image/png" src="/bgraph.png?deviceId={{ devId }}" />
+    </figure>
+    {% endif %}
+
+    <hr>
+    <h2>Readings from the past 24 hours</h2>
+    <p>
+    <table class=log>
+	<tr>
+	    <th>Timestamp</th>
+	    <th>Temperature (C)</th>
+	    <th>Humidity (%)</th>
+	    <th>Pressure (hPa)</th>
+	</tr>
+	{% for entry in log %}
+	<tr>
+	    <td>{{ entry.date }}</td>
+	    <td>{{ entry.temperature }}</td>
+	    <td>{{ entry.humidity }}</td>
+	    <td>{{ entry.pressure }}</td>
+	</tr>
+	{% endfor %}
+    </table>
+    </p>
+{% endblock %}