Dev a Windows service to connect to WebDav server / settings stored in Google Spreadsheet

We need a windows expert to dev a windows program with the following features: (we are not sure if it is possible, but we are sure someone here can help us to achieve our goal :-) CONTEXT - we have nomad users and we want to help them to connect to our shared files system - when they are inside the company, we want the shared files system to be mapped automatically on Z: - when they are outside the company with internet connection, we want the shared files system to be mapped automatically on Z: via webdav - so for our users, they always have access to their files via Z: FEATURES - the program should work like a windows service - the program is only one file (no extra files or dll) - the installation of the program is made by copy-paste (after it could have some actions to do to make it working as a service; thanks in advance to explain to us) USECASE (we imagine but we are opened to discuss if you think having a better one) -- when the windows starts, the service starts -- when the windows session is opened, then the service is active -- every 2 minutes, the program checks the network connection --- if there is no connection (no wifi, no lan connection), the program goes back to sleep --- if there is a connection, the program checks if the type of connection is the same as the previous check ---- if it is the same, the program goes back to sleep ---- if it is not the same (no connection before and connection now, or connection A before and connection B now), ----- the program connects to the Google Spreadsheet to recover the external IPs of our company ----- the program checks if there is a matching between IPs (it means the computer is inside the company) ------ if yes, the program maps the network folder on Z: ------ if no, the program maps the network folder on Z: via webdav sample of the spreadsheet: [login to view URL] We need the sources and the build process. All the hardcoded stuff should be centralized in one single file, easy for us to change some settings and to rebuild the program.