pihole - override default server host
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The pihole url used for making requests in prod is
Line 8 in 7c25c6d
This implied that the device in which pihole-switch is used, has the pihole server set as the dns in order to resolve http://pi.hole/.
If it's not the case all the requests will fail.
It should be possible to override the default host, by passing the host's IPv4/hostname and then internally build the full url such as http://192.168.1.15/admin/api.php where 192.168.1.15 is the parameter passed to override the default one.
API
Must refactor PiHoleConfig::new ctor to allow to pass the full url.
It should also be provided another method to build the full url sush as
fn build_url(host: &str) -> StringCLI
Right now there are only commands, so the Cli is just a sum type (enum).
It must be converted to a struct in order to add a global option
#[derive(StructOpt)]
pub struct Cli {
#[structopt(short = "H", long = "host")]
host: Option<String>,
#[structopt(subcommand)]
cmd: Commands, // Commands is the current Cli enum
}