feat: basic config, logger, main loop

backend/.gitignore

@@ -1,5 +1,8 @@
-# Created by https://www.toptal.com/developers/gitignore/api/go,goland,visualstudiocode,vim
-# Edit at https://www.toptal.com/developers/gitignore?templates=go,goland,visualstudiocode,vim
+# Created by https://www.toptal.com/developers/gitignore/api/vim,dotenv,go
+# Edit at https://www.toptal.com/developers/gitignore?templates=vim,dotenv,go
+
+### dotenv ###
+.env
 
 ### Go ###
 # If you prefer the allow list template instead of the deny list, see community template:
@@ -24,119 +27,6 @@
 # Go workspace file
 go.work
 
-### GoLand ###
-# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
-# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
-
-# User-specific stuff
-.idea/**/workspace.xml
-.idea/**/tasks.xml
-.idea/**/usage.statistics.xml
-.idea/**/dictionaries
-.idea/**/shelf
-
-# AWS User-specific
-.idea/**/aws.xml
-
-# Generated files
-.idea/**/contentModel.xml
-
-# Sensitive or high-churn files
-.idea/**/dataSources/
-.idea/**/dataSources.ids
-.idea/**/dataSources.local.xml
-.idea/**/sqlDataSources.xml
-.idea/**/dynamic.xml
-.idea/**/uiDesigner.xml
-.idea/**/dbnavigator.xml
-
-# Gradle
-.idea/**/gradle.xml
-.idea/**/libraries
-
-# Gradle and Maven with auto-import
-# When using Gradle or Maven with auto-import, you should exclude module files,
-# since they will be recreated, and may cause churn.  Uncomment if using
-# auto-import.
-# .idea/artifacts
-# .idea/compiler.xml
-# .idea/jarRepositories.xml
-# .idea/modules.xml
-# .idea/*.iml
-# .idea/modules
-# *.iml
-# *.ipr
-
-# CMake
-cmake-build-*/
-
-# Mongo Explorer plugin
-.idea/**/mongoSettings.xml
-
-# File-based project format
-*.iws
-
-# IntelliJ
-out/
-
-# mpeltonen/sbt-idea plugin
-.idea_modules/
-
-# JIRA plugin
-atlassian-ide-plugin.xml
-
-# Cursive Clojure plugin
-.idea/replstate.xml
-
-# SonarLint plugin
-.idea/sonarlint/
-
-# Crashlytics plugin (for Android Studio and IntelliJ)
-com_crashlytics_export_strings.xml
-crashlytics.properties
-crashlytics-build.properties
-fabric.properties
-
-# Editor-based Rest Client
-.idea/httpRequests
-
-# Android studio 3.1+ serialized cache file
-.idea/caches/build_file_checksums.ser
-
-### GoLand Patch ###
-# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
-
-# *.iml
-# modules.xml
-# .idea/misc.xml
-# *.ipr
-
-# Sonarlint plugin
-# https://plugins.jetbrains.com/plugin/7973-sonarlint
-.idea/**/sonarlint/
-
-# SonarQube Plugin
-# https://plugins.jetbrains.com/plugin/7238-sonarqube-community-plugin
-.idea/**/sonarIssues.xml
-
-# Markdown Navigator plugin
-# https://plugins.jetbrains.com/plugin/7896-markdown-navigator-enhanced
-.idea/**/markdown-navigator.xml
-.idea/**/markdown-navigator-enh.xml
-.idea/**/markdown-navigator/
-
-# Cache file creation bug
-# See https://youtrack.jetbrains.com/issue/JBR-2257
-.idea/$CACHE_FILE$
-
-# CodeStream plugin
-# https://plugins.jetbrains.com/plugin/12206-codestream
-.idea/codestream.xml
-
-# Azure Toolkit for IntelliJ plugin
-# https://plugins.jetbrains.com/plugin/8053-azure-toolkit-for-intellij
-.idea/**/azureSettings.xml
-
 ### Vim ###
 # Swap
 [._]*.s[a-v][a-z]
@@ -158,24 +48,5 @@ tags
 # Persistent undo
 [._]*.un~
 
-### VisualStudioCode ###
-.vscode/*
-!.vscode/settings.json
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-!.vscode/*.code-snippets
-
-# Local History for Visual Studio Code
-.history/
-
-# Built Visual Studio Code Extensions
-*.vsix
-
-### VisualStudioCode Patch ###
-# Ignore all local history of files
-.history
-.ionide
-
-# End of https://www.toptal.com/developers/gitignore/api/go,goland,visualstudiocode,vim
+# End of https://www.toptal.com/developers/gitignore/api/vim,dotenv,go
 

backend/cmd/main.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"github.com/gin-gonic/gin"
+
+	"easywish/config"
+	"easywish/internal/logger"
+)
+
+func main() {
+
+	// Load the configuration
+	if err := config.LoadConfig(); err != nil {
+		panic(err)
+	}
+
+	// Setup logger
+	logger.InitLogger()
+    defer logger.GetLogger().Sync()
+
+	// Connect & migrate database
+	// models.Init()
+
+	// Setup routes
+	r := gin.Default()
+	// serviceController.SetupRoutes(r)
+	// animalController.SetupRoutes(r)
+	r.Run()
+}
+

backend/config/config.go

@@ -0,0 +1,92 @@
+package config
+
+import (
+	"log"
+	"reflect"
+	"fmt"
+
+	"github.com/spf13/viper"
+)
+
+type Config struct {
+	Hostname 		string `mapstructure:"HOSTNAME"`
+	Port     		string `mapstructure:"PORT"`
+
+	DatabaseUrl 	string `mapstructure:"DATABASE_URL"`
+	RedisUrl 		string `mapstructure:"REDIS_URL"`
+	MinioUrl 		string `mapstructure:"MINIO_URL"`
+
+	JwtAlgorithm 	string `mapstructure:"JWT_ALGORITHM"`
+	JwtSecret 		string `mapstructure:"JWT_SECRET"`
+	JwtIssuer 		string `mapstructure:"JWT_ISSUER"`
+	JwtAudience 	string `mapstructure:"JWT_AUDIENCE"`
+	JwtExpAccess 	string `mapstructure:"JWT_EXP_ACCESS"`
+	JwtExpRefresh 	string `mapstructure:"JWT_EXP_REFRESH"`
+
+	Environment 	string `mapstructure:"ENVIRONMENT"`
+}
+
+var config *Config
+
+// TODO: migrate logging to Zap
+func LoadConfig() error {
+
+	// Load .env file
+	if err := viper.ReadInConfig(); err != nil {
+		log.Printf("Error reading config file, proceeding with environment variables. %s", err)
+	}
+
+	// Set default parameters
+	viper.SetDefault("HOSTNAME", "localhost")
+	viper.SetDefault("PORT", "8080")
+	viper.SetDefault("DATABASE_URL", "mydb")
+	viper.SetDefault("REDIS_URL", "myredis")
+	viper.SetDefault("MINIO_URL", "myminio")
+	viper.SetDefault("JWT_ALGORITHM", "HS256")
+	viper.SetDefault("JWT_SECRET", "default_jwt_secret_please_change") // TODO: remove and randomly generate
+	viper.SetDefault("JWT_EXP_ACCESS", "5m")
+	viper.SetDefault("JWT_EXP_REFRESH", "1w")
+	viper.SetDefault("JWT_AUDIENCE", "easywish")
+	viper.SetDefault("JWT_ISSUER", "easywish")
+	
+	viper.SetDefault("ENVIRONMENT", "production")
+
+	// Set the file name and type for Viper
+	viper.SetConfigName(".env") // name of config file (without extension)
+	viper.SetConfigType("env")   // REQUIRED if the config file does not have the extension
+	viper.AddConfigPath(".")     // optionally look for config in the working directory
+
+	// Unmarshal the configuration into the Config struct
+	if err := viper.Unmarshal(&config); err != nil {
+		log.Fatalf("Unable to decode into struct, %v", err)
+	}
+
+	// Perform validation
+	if err := validateConfig(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func validateConfig() error {
+	v := reflect.ValueOf(*config)
+	t := v.Type()
+
+	for i := range v.NumField() {
+		field := v.Field(i)
+		fieldType := t.Field(i)
+
+		// Check if the field is a string and is empty
+		if field.Kind() == reflect.String && field.String() == "" {
+			return fmt.Errorf("Missing required configuration: %s", fieldType.Name)
+		}
+	}
+
+	return nil
+}
+
+func GetConfig() *Config {
+	return config
+}
+

backend/go.mod

@@ -29,6 +29,7 @@ require (
 	github.com/go-viper/mapstructure/v2 v2.2.1 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
 	github.com/golang-jwt/jwt/v5 v5.2.2 // indirect
+	github.com/joho/godotenv v1.5.1 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.10 // indirect

backend/go.sum

@@ -55,6 +55,8 @@ github.com/golang-jwt/jwt/v5 v5.2.2 h1:Rl4B7itRWVtYIHFrSNd7vhTiz9UpLdi6gZhZ3wEeD
 github.com/golang-jwt/jwt/v5 v5.2.2/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=

backend/internal/logger/logger.go

@@ -0,0 +1,28 @@
+package logger
+
+import (
+    "go.uber.org/zap"
+	  "easywish/config"
+)
+
+var logger *zap.Logger
+
+func InitLogger() {
+    var err error
+	cfg := config.GetConfig()
+
+	// TODO: make this configurable
+    if cfg.Environment == "production" {
+        logger, err = zap.NewProduction()
+    } else {
+        logger, err = zap.NewDevelopment()
+    }
+    if err != nil {
+        panic(err)
+    }
+}
+
+func GetLogger() *zap.Logger {
+    return logger
+}
+