#!/usr/bin/env python3

"""
Example template for PyWPS4 WSGI application.
"""

import flask
import pywps
import os

pywps.inout.basic.OGCUNIT["Point"] = "urn:ogc:def:uom:OGC:1.0:point"

from pywps.app.Service import Service
from processes.borehole_data import Borehole
from processes.monitoring_well import MonitoringWell
from processes.monitoring_timeseries import MonitoringTimeseries
from processes.line_data import Lines
from processes.transect import Transect


processes = [
    Borehole(),
    Lines(),
    Transect(),
    MonitoringWell(),
    MonitoringTimeseries(),
]

# Description used in template
process_descriptor = {}
for process in processes:
    abstract = process.abstract
    identifier = process.identifier
    process_descriptor[identifier] = abstract

service = Service(processes, ["pywps.cfg"])
application = flask.Flask(__name__)


@application.route("/")
def hello():
    server_url = pywps.configuration.get_config_value("server", "url")
    request_url = flask.request.url
    return flask.render_template(
        "index.html",
        request_url=request_url,
        server_url=server_url,
        title="Example service",
        process_descriptor=process_descriptor,
    )


@application.route("/wps", methods=["GET", "POST"])
def wps():
    return service


@application.route("/outputs/" + "<path:filename>")
def outputfile(filename):
    targetfile = os.path.join("outputs", filename)
    if os.path.isfile(targetfile):
        file_ext = os.path.splitext(targetfile)[1]
        with open(targetfile, mode="rb") as f:
            file_bytes = f.read()
        mime_type = None
        if "xml" in file_ext:
            mime_type = "text/xml"
        return flask.Response(file_bytes, content_type=mime_type)
    else:
        flask.abort(404)


@application.route("/static/" + "<path:filename>")
def staticfile(filename):
    targetfile = os.path.join("static", filename)
    if os.path.isfile(targetfile):
        with open(targetfile, mode="rb") as f:
            file_bytes = f.read()
        mime_type = None
        return flask.Response(file_bytes, content_type=mime_type)
    else:
        flask.abort(404)


if __name__ == "__main__":
    import argparse

    parser = argparse.ArgumentParser(
        description="""Script for starting an example PyWPS
                       instance with sample processes""",
        epilog="""Do not use this service in a production environment.
         It's intended to be running in test environment only!
        For more documentation, visit http://pywps.org/doc
        """,
    )
    parser.add_argument(
        "-d", "--daemon", action="store_true", help="run in daemon mode"
    )
    parser.add_argument(
        "-a",
        "--all-addresses",
        action="store_true",
        help="run flask using IPv4 0.0.0.0 (all network interfaces),"
        + "otherwise bind to 127.0.0.1 (localhost).  This maybe necessary in systems that only run Flask",
    )
    args = parser.parse_args()

    if args.all_addresses:
        bind_host = "0.0.0.0"
    else:
        bind_host = "127.0.0.1"

    if args.daemon:
        pid = None
        try:
            pid = os.fork()
        except OSError as e:
            raise Exception("%s [%d]" % (e.strerror, e.errno))

        if pid == 0:
            os.setsid()
            application.run(threaded=True, host=bind_host)
        else:
            os._exit(0)
    else:
        application.run(threaded=True, host=bind_host)