allow country list to "prioritize" a country (configurable)

.gitignore

@@ -1,2 +1,4 @@
 # Ignore the executable
 amsterdam
+__debug_bin*
+

config/config.go

@@ -76,6 +76,9 @@ type AmConfig struct {
 	Rendering struct {
 		TemplateDir string `yaml:"templatedir"`
 		CookieKey   string `yaml:"cookiekey"`
+		CountryList struct {
+			Prioritize string `yaml:"prioritize"`
+		} `yaml:"countryList"`
 	} `yaml:"rendering"`
 }
 
@@ -151,6 +154,7 @@ func overlayConfig(dest *AmConfig, loaded *AmConfig, defaults *AmConfig) {
 	dest.Email.Disclaimer = overlayString(loaded.Email.Disclaimer, defaults.Email.Disclaimer)
 	dest.Rendering.TemplateDir = overlayString(loaded.Rendering.TemplateDir, defaults.Rendering.TemplateDir)
 	dest.Rendering.CookieKey = overlayString(loaded.Rendering.CookieKey, defaults.Rendering.CookieKey)
+	dest.Rendering.CountryList.Prioritize = overlayString(loaded.Rendering.CountryList.Prioritize, defaults.Rendering.CountryList.Prioritize)
 }
 
 // SetupConfig loads the command line arguments, loads the config file, and prepares GlobalConfig.

config/default.yaml

@@ -37,3 +37,5 @@ email:
 rendering:
   templatedir: custom_templates
   cookiekey: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
+  countryList:
+    prioritize: US

ui/templates.go

@@ -49,11 +49,22 @@ func internalGetCountryList() []countries.CountryCode {
 	countryListMutex.Lock()
 	defer countryListMutex.Unlock()
 	if cachedCountryList == nil {
-		c := countries.All()
+		countryList := countries.All()
-		slices.SortFunc(c, func(a countries.CountryCode, b countries.CountryCode) int {
+		slices.SortFunc(countryList, func(a countries.CountryCode, b countries.CountryCode) int {
 			return strings.Compare(a.Info().Name, b.Info().Name)
 		})
-		cachedCountryList = c
+		if config.GlobalConfig.Rendering.CountryList.Prioritize != "" {
+			for i, c := range countryList {
+				if c.Info().Alpha2 == config.GlobalConfig.Rendering.CountryList.Prioritize {
+					newList := make([]countries.CountryCode, len(countryList))
+					newList[0] = c
+					copy(newList[1:], countryList[:i])
+					copy(newList[i+1:], countryList[i+1:])
+					countryList = newList
+				}
+			}
+		}
+		cachedCountryList = countryList
 	}
 	return cachedCountryList
 }