Move post_history module out of subdir, port logging from tui to println/journald

src/post_history.rs

@@ -4,6 +4,7 @@ use std::fs::OpenOptions;
 use std::io::Write;
 use std::path::Path;
 use serde_derive::{Deserialize, Serialize};
+use crate::write_error;
 
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub(crate) struct SeriesHistory {
@@ -11,7 +12,7 @@ pub(crate) struct SeriesHistory {
 }
 
 impl SeriesHistory {
-    pub(crate) fn load_history() -> Result<Self, String> {
+    pub(crate) fn load_history() -> Result<Self, ()> {
         let path = confy::get_configuration_file_path(env!("CARGO_PKG_NAME"), "config").expect("Something went wrong with confy");
         let config_dir = path.parent().expect("Something went wrong with confy");
 
@@ -21,7 +22,11 @@ impl SeriesHistory {
             true => {
                 let file_contents: String = match fs::read_to_string("history.toml") {
                     Ok(data) => data,
-                    Err(e) => return Err(format!("{}", e)),
+                    Err(e) => {
+                        let err_msg = format!("{e}");
+                        write_error(err_msg);
+                        return Err(())
+                    },
                 };
 
                 let history: Result<SeriesHistory, toml::de::Error> = match file_contents.len() {
@@ -33,7 +38,11 @@ impl SeriesHistory {
 
                 match history {
                     Ok(data) => Ok(data),
-                    Err(e) => Err(format!("{}", e))
+                    Err(e) => {
+                        let err_msg = format!("{e}");
+                        write_error(err_msg);
+                        Err(())
+                    }
                 }
             },
             false => {