Refactor context key for logger in main.go

Reviewed-on: #1
Co-authored-by: Ron Rise <ron@siteworxpro.com>
Co-committed-by: Ron Rise <ron@siteworxpro.com>

.dockerignore

@@ -0,0 +1,3 @@
+.idea/
+
+top-wallpaper

.gitea/workflows/build.yml

@@ -0,0 +1,42 @@
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to build and push'
+        required: false
+        default: 'latest'
+  push:
+    tags:
+      - "v*"
+
+name: 🏗️✨ Build Workflow
+
+jobs:
+  Build:
+    name: 🖥️ 🔨 Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: 📖 🔍 Checkout Repository Code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+          submodules: 'true'
+
+      - name: 🔑 🔐 Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: 🏗️ 🔧 Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: 🐳 🔨 Build Container
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          sbom: true
+          provenance: true
+          context: .
+          dockerfile: Dockerfile
+          tags: siteworxpro/top-wallpaper:${{ gitea.ref_name }}

.gitea/workflows/lint.yml

@@ -0,0 +1,59 @@
+on:
+  push:
+    branches:
+      - "*"
+
+name: 🚨 Test Code Base
+run-name: ${{ github.workflow }}-{{ github.ref_name }}-{{ github.run_number }}
+
+env:
+  GO_VERSION: '1.24.6'
+
+jobs:
+  test-go:
+    name: 🔍 🐹 Go Tests
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: 🛡️ 🔒 Add Siteworx CA Certificates
+        run: |
+          curl -Ls https://siteworxpro.com/hosted/Siteworx+Root+CA.pem -o /usr/local/share/ca-certificates/sw.crt
+          update-ca-certificates
+
+      - name: ⚙️ 🐹 Set up Go Environment
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ env.GO_VERSION }}
+          cache: true
+
+      - name: 📖 🔍 Checkout Repository Code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 1
+
+      - name: 📦 📥 Install Dependencies
+        run: |
+          go mod download
+
+      - name: ✅ 🔍 Run Go Tests
+        run: |
+          go test -v ./... -coverprofile=coverage.out
+
+  golangci-lint:
+    name: 🧹 Lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: 📥 Checkout code
+        uses: actions/checkout@v3
+
+      - name: 🛠️ Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: 📦 📥 Install Dependencies
+        run: |
+          go mod download
+
+      - name: ✅ 🔍 Run Go Lint
+        uses: golangci/golangci-lint-action@v8.0.0

.golangci.yml

@@ -0,0 +1,61 @@
+version: "2"
+linters:
+  default: none
+  enable:
+    - bodyclose
+    - gocritic
+    - govet
+    - ineffassign
+    - staticcheck
+    - testifylint
+    - unused
+  settings:
+    govet:
+      disable:
+        - fieldalignment
+      enable-all: true
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    rules:
+      - linters:
+          - bodyclose
+        path: .*_test.go
+      - linters:
+          - bodyclose
+        path: router/timeout_response.go
+      # False positives on CGO generated code
+      - linters:
+          - staticcheck
+        path: vips/.*
+        text: 'SA4000:'
+      # False positives on CGO generated code
+      - linters:
+          - gocritic
+        path: vips/.*
+        text: dupSubExpr
+      # False positives on CGO generated code
+      - linters:
+          - staticcheck
+        text: 'ST1005:'
+    paths:
+      - .tmp
+      - vendor
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - goimports
+  exclusions:
+    generated: lax
+    paths:
+      - .tmp
+      - vendor
+      - third_party$
+      - builtin$
+      - examples$

Dockerfile

@@ -1,10 +1,10 @@
-FROM siteworxpro/golang:1.24.0 AS build
+FROM siteworxpro/golang:1.24.6 AS build
 
 WORKDIR /app
 
 ADD . .
 
-ENV GOPRIVATE=git.s.int
+ENV GOPRIVATE=gitea.siteworxpro.com
 ENV GOPROXY=direct
 ENV CGO_ENABLED=0
 

README.md

@@ -30,7 +30,20 @@ PORT: Port to serve the image (default: 8080)
 
 ## docker
 ```shell
-docker run --rm -d -p 8080:8080 --name top-wallpaper -e REDIS_URL=redis -e REDIS_PORT=6379 -e REDIS_PASSWORD=pass -e REDIS_DB=0 -e ALLOWED_ORIGINS=http://localhost:8080 -e PATH=/wallpaper -e PORT=8080 siteworxpro/top-wallpaper:latest
+docker run --rm -d -p 8080:8080 --name top-wallpaper -e REDIS_URL=redis -e REDIS_PORT=6379 -e REDIS_PASSWORD=pass -e REDIS_DB=0 -e ALLOWED_ORIGINS=http://localhost:8080 -e PATH=/wallpaper -e PORT=8080 siteworxpro/top-wallpaper:v1.3.1
+```
+
+## Docker Compose
+```shell
+curl -L https://gitea.siteworxpro.com/siteworxpro/top-wallpaper/raw/tag/v1.3.1/docker-compose.yml  | docker compose -f - up -d
+````
+Access the app at [https://localhost](https://localhost).
+
+## Embedding the Image
+You can embed the image in your HTML using the following code:
+
+```html
+<img src="https://localhost" alt="Top Wallpaper" />
 ```
 
 ## License

docker-compose.yml

@@ -0,0 +1,50 @@
+volumes:
+  redis_data:
+
+services:
+  traefik:
+    image: traefik:latest
+    container_name: traefik
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - "/var/run/docker.sock:/var/run/docker.sock"
+    restart: always
+    command:
+      - "--providers.docker=true"
+      - "--providers.docker.exposedByDefault=false"
+      - "--entrypoints.web.address=:80"
+      - "--entrypoints.web-secure.address=:443"
+      - "--accesslog=true"
+      - "--entrypoints.web.http.redirections.entryPoint.to=web-secure"
+      - "--entrypoints.web.http.redirections.entryPoint.scheme=https"
+      - "--entrypoints.web.http.redirections.entrypoint.permanent=true"
+
+  redis:
+    image: redis:latest
+    container_name: redis
+    restart: always
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+    volumes:
+      - redis_data:/data
+
+  api:
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.api.entrypoints=web-secure"
+      - "traefik.http.routers.api.rule=Host(`localhost`) || Host(`127.0.0.1`)"
+      - "traefik.http.routers.api.tls=true"
+      - "traefik.http.services.api.loadbalancer.server.port=8080"
+    image: siteworxpro/top-wallpaper:v1.3.1
+    container_name: top-wallpaper
+    environment:
+      REDIS_URL: "redis"
+      CORS_ORIGINS: "https://localhost"
+    depends_on:
+      redis:
+        condition: service_healthy

go.mod

@@ -1,24 +1,24 @@
 module github.com/siteworxpro/top-wallpaper
 
-go 1.24.0
+go 1.24.6
 
 require (
-	github.com/labstack/echo/v4 v4.13.3
+	github.com/labstack/echo/v4 v4.13.4
 	github.com/labstack/gommon v0.4.2
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
-	github.com/redis/go-redis/v9 v9.7.0
+	github.com/redis/go-redis/v9 v9.12.1
 )
 
 require (
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
-	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
-	golang.org/x/crypto v0.31.0 // indirect
+	golang.org/x/crypto v0.41.0 // indirect
-	golang.org/x/net v0.33.0 // indirect
+	golang.org/x/net v0.43.0 // indirect
-	golang.org/x/sys v0.28.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
-	golang.org/x/text v0.21.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
-	golang.org/x/time v0.8.0 // indirect
+	golang.org/x/time v0.12.0 // indirect
 )

go.sum

@@ -4,16 +4,22 @@ github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
 github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/labstack/echo/v4 v4.13.3 h1:pwhpCPrTl5qry5HRdM5FwdXnhXSLSY+WE+YQSeCaafY=
 github.com/labstack/echo/v4 v4.13.3/go.mod h1:o90YNEeQWjDozo584l7AwhJMHN0bOC4tAfg+Xox9q5g=
+github.com/labstack/echo/v4 v4.13.4 h1:oTZZW+T3s9gAu5L8vmzihV7/lkXGZuITzTQkTEhcXEA=
+github.com/labstack/echo/v4 v4.13.4/go.mod h1:g63b33BZ5vZzcIUF8AtRH40DrTlXnx4UMC8rBdndmjQ=
 github.com/labstack/gommon v0.4.2 h1:F8qTUNXgG1+6WQmqoUWnz8WiEU60mXVVw0P4ht1WRA0=
 github.com/labstack/gommon v0.4.2/go.mod h1:QlUFxVM+SNXhDL/Z7YhocGIBYOiwB0mXm1+1bAPHPyU=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
 github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
+github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
@@ -23,6 +29,8 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/redis/go-redis/v9 v9.7.0 h1:HhLSs+B6O021gwzl+locl0zEDnyNkxMtf/Z3NNBMa9E=
 github.com/redis/go-redis/v9 v9.7.0/go.mod h1:f6zhXITC7JUJIlPEiBOTXxJgPLdZcA93GewI7inzyWw=
+github.com/redis/go-redis/v9 v9.12.1 h1:k5iquqv27aBtnTm2tIkROUDp8JBXhXZIVu1InSgvovg=
+github.com/redis/go-redis/v9 v9.12.1/go.mod h1:huWgSWd8mW6+m0VPhJjSSQ+d6Nh1VICQ6Q5lHuCH/Iw=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
@@ -31,15 +39,25 @@ github.com/valyala/fasttemplate v1.2.2 h1:lxLXG0uE3Qnshl9QyaK6XJxMXlQZELvChBOCmQ
 github.com/valyala/fasttemplate v1.2.2/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
 golang.org/x/crypto v0.31.0 h1:ihbySMvVjLAeSH1IbfcRTkD/iNscyz8rGzjF/E5hV6U=
 golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
+golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4=
+golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc=
 golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
 golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
 golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
+golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
+golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
+golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
 golang.org/x/time v0.8.0 h1:9i3RxcPv3PZnitoVGMPDKZSq1xW1gK1Xy3ArNOGZfEg=
 golang.org/x/time v0.8.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
+golang.org/x/time v0.12.0 h1:ScB/8o8olJvc+CQPWrK3fPZNfh7qgwCrY0zJmoEQLSE=
+golang.org/x/time v0.12.0/go.mod h1:CDIdPxbZBQxdj6cxyCIdrNogrJKMJ7pr37NYpMcMDSg=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

http/handler.go

@@ -1,110 +1,26 @@
 package http
 
 import (
-	"context"
-	"github.com/labstack/echo/v4"
-	client "github.com/siteworxpro/top-wallpaper/reddit"
-	"github.com/siteworxpro/top-wallpaper/resize"
-	"io"
 	"net/http"
-	"os"
+
-	"strconv"
+	"github.com/labstack/echo/v4"
-	"time"
+	"github.com/siteworxpro/top-wallpaper/redis"
 )
 
 func Get(c echo.Context) error {
-	cc := c.(*CustomContext)
 
-	var size int
+	rc, err := redis.NewRedis()
-	var err error
-
-	if sizeS, ok := os.LookupEnv("MAX_SIZE"); ok {
-		size, err = strconv.Atoi(sizeS)
 	if err != nil {
-			size = 1200
+		return c.String(http.StatusInternalServerError, "Internal Server Error: "+err.Error())
-		}
-	} else {
-		size = 1200
 	}
 
-	if size < 100 {
+	val, err := rc.Get(redis.CacheKey)
-		size = 1200
-	}
 
-	var latestImageVal string
+	if err != nil || val == "" {
-	if cc.redis != nil {
+		return c.NoContent(http.StatusNoContent)
-		latestImage := cc.redis.Get(context.TODO(), "latestImage")
-		latestImageVal, err = latestImage.Result()
 	}
 
-	if err != nil || latestImageVal == "" {
-		c.Logger().Info("Fetching latest image")
-		latestImageVal, err = client.GetLatestImage(func(url string) (*http.Response, error) {
-			return http.Get(url)
-		})
-		if err != nil {
-			return c.String(http.StatusInternalServerError, "Error fetching latest image")
-		}
-
-		if cc.redis != nil {
-			cmd := cc.redis.Set(context.TODO(), "latestImage", latestImageVal, 600*time.Second)
-			if cmd.Err() != nil {
-				c.Logger().Warn("could not cache image")
-			}
-		}
-	} else {
-		c.Logger().Info("Image name fetched from cache")
-	}
-
-	var imageData string
-	if cc.redis != nil {
-		latestImageBin := cc.redis.Get(context.TODO(), "latestImage:bin:"+latestImageVal)
-		imageData = latestImageBin.Val()
-	}
-
-	if imageData != "" {
-		c.Logger().Info("Image data fetched from cache")
-
-		return c.Blob(http.StatusOK, "image/jpeg", []byte(imageData))
-	}
-
-	response, err := http.Get(latestImageVal)
-	if err != nil {
-		return c.String(http.StatusInternalServerError, "Error fetching image")
-	}
-
-	if response.StatusCode != http.StatusOK {
-		return c.String(http.StatusInternalServerError, "Error fetching image")
-	}
-
-	defer func(Body io.ReadCloser) {
-		_ = Body.Close()
-	}(response.Body)
-
-	imageDataBytes, err := io.ReadAll(response.Body)
-	if err != nil {
-		return c.String(http.StatusInternalServerError, "Error fetching image")
-	}
-
-	imageData = string(imageDataBytes)
-	resized, err := resize.Shrink(imageData, uint(size), 70)
-
-	if err != nil {
-		return c.String(http.StatusInternalServerError, "Error resizing image")
-	}
-
-	go func(data string) {
-		if cc.redis == nil {
-			return
-		}
-
-		_, err = cc.redis.Set(context.TODO(), "latestImage:bin:"+latestImageVal, data, 600*time.Second).Result()
-		if err != nil {
-			c.Logger().Warn("could not cache image")
-		}
-	}(resized)
-
 	c.Response().Header().Set("Cache-Control", "public, max-age=600")
 
-	return c.Blob(http.StatusOK, "image/jpeg", []byte(resized))
+	return c.Blob(http.StatusOK, "image/jpeg", []byte(val))
 }

http/middleware.go

@@ -1,59 +0,0 @@
-package http
-
-import (
-	"context"
-	"fmt"
-	"github.com/labstack/echo/v4"
-	"github.com/redis/go-redis/v9"
-	"os"
-	"strconv"
-)
-
-type CustomContext struct {
-	echo.Context
-	redis *redis.Client
-}
-
-func GetCustomContext(next echo.HandlerFunc) echo.HandlerFunc {
-	return func(c echo.Context) error {
-		redisUrl := os.Getenv("REDIS_URL")
-		if redisUrl == "" {
-			c.Logger().Warn("REDIS_URL not set, skipping redis connection. Use REDIS_URL to cache the image")
-
-			return next(&CustomContext{c, nil})
-		}
-
-		redisPort := os.Getenv("REDIS_PORT")
-		if redisPort == "" {
-			redisPort = "6379"
-		}
-
-		redisDb := os.Getenv("REDIS_DB")
-		if redisDb == "" {
-			redisDb = "0"
-		}
-
-		redisDbInt, err := strconv.ParseInt(redisDb, 10, 64)
-		if err != nil {
-			c.Logger().Warn("REDIS_DB is not a valid integer, skipping redis connection. Use REDIS_DB to cache the image")
-
-			return next(&CustomContext{})
-		}
-
-		cc := &CustomContext{c, redis.NewClient(&redis.Options{
-			Addr:     fmt.Sprintf("%s:%s", redisUrl, redisPort),
-			Password: os.Getenv("REDIS_PASSWORD"),
-			DB:       int(redisDbInt),
-		})}
-
-		cmd := cc.redis.Ping(context.Background())
-
-		if cmd.Err() != nil {
-			c.Logger().Warn("could not connect to redis")
-
-			cc.redis = nil
-		}
-
-		return next(cc)
-	}
-}

main.go

@@ -1,23 +1,39 @@
 package main
 
 import (
+	"context"
+	"net/http"
+	"os"
+	"strings"
+
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
 	"github.com/labstack/gommon/log"
 	tphttp "github.com/siteworxpro/top-wallpaper/http"
-	"net/http"
+	"github.com/siteworxpro/top-wallpaper/reddit"
-	"os"
+	"github.com/siteworxpro/top-wallpaper/redis"
-	"strings"
 )
 
 func main() {
 
-	e := echo.New()
+	ctx, fn := context.WithCancel(context.Background())
-	e.Logger.SetLevel(log.INFO)
+	defer fn()
 
+	rc, err := redis.NewRedis()
+
+	if err != nil {
+		log.Error("Could not initialize Redis client: ", err)
+
+		return
+	}
+
+	e := echo.New()
+	e.AcquireContext().Set("redisClient", rc)
+	e.Logger.SetOutput(os.Stdout)
+
+	e.Logger.SetLevel(log.INFO)
 	e.HideBanner = true
 
-	e.Use(tphttp.GetCustomContext)
 	e.Use(middleware.Logger())
 	e.Use(middleware.RequestID())
 	e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
@@ -34,12 +50,17 @@ func main() {
 	e.GET(path, tphttp.Get)
 
 	e.Logger.Info("Starting server at path " + path)
-	// start the server
 
 	port := os.Getenv("PORT")
 	if port == "" {
 		port = "8080"
 	}
 
+	ctx = redis.WithContext(ctx, rc)
+
+	ctx = context.WithValue(ctx, "logger", e.Logger) //nolint:staticcheck
+
+	go reddit.Fetch(ctx)
+
 	e.Logger.Fatal(e.Start(":" + port))
 }

reddit/client.go

@@ -60,15 +60,16 @@ func GetLatestImage(httpGet func(url string) (*http.Response, error)) (string, e
 	if err != nil {
 		return "", err
 	}
-	defer func(Body io.ReadCloser) {
+	defer response.Body.Close()
-		_ = Body.Close()
-	}(response.Body)
 
 	if response.StatusCode != http.StatusOK {
 		return "", fmt.Errorf("error fetching reddit data: %s", response.Status)
 	}
 
 	jsonBytes, err := io.ReadAll(response.Body)
+	if err != nil {
+		return "", err
+	}
 
 	redditData := redditResponse{}
 	err = json.Unmarshal(jsonBytes, &redditData)

reddit/fetcher.go

@@ -0,0 +1,148 @@
+package reddit
+
+import (
+	"context"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/labstack/echo/v4"
+	"github.com/siteworxpro/top-wallpaper/redis"
+	"github.com/siteworxpro/top-wallpaper/resize"
+)
+
+func Fetch(ctx context.Context) {
+	const defaultImageSize = 1600
+	const minImageSize = 100
+
+	rc, err := redis.FromContext(ctx)
+	if err != nil {
+		panic("Redis client not found in context: " + err.Error())
+	}
+
+	l := ctx.Value("logger").(echo.Logger)
+
+	var size int
+	if sizeS, ok := os.LookupEnv("MAX_SIZE"); ok {
+		size, err = strconv.Atoi(sizeS)
+		if err != nil {
+			size = defaultImageSize
+		}
+	} else {
+		size = defaultImageSize
+	}
+
+	if size < minImageSize {
+		size = defaultImageSize
+	}
+
+	for {
+		select {
+		case <-ctx.Done():
+
+			l.Info("Stopping Reddit fetcher...")
+			_ = rc.Close()
+
+			return
+		default:
+
+			val, err := rc.Get(redis.CacheKey)
+			if err != nil {
+				l.Error("Error fetching from Redis: ", err)
+				break
+			}
+
+			if val != "" {
+				l.Info("Reddit image fetched from cache...")
+
+				break
+			}
+
+			l.Info("Fetching latest image from Reddit...")
+
+			latestImageVal, err := GetLatestImage(func(u string) (*http.Response, error) {
+
+				request := &http.Request{
+					Method: http.MethodGet,
+					Header: http.Header{
+						"User-Agent": []string{"Mozilla/5.0 (compatible; RedditBot/1.0; +https://www.reddit.com/wiki/redditauth)"},
+					},
+					URL: &url.URL{
+						Scheme: "https",
+						Host:   "www.reddit.com",
+						Path:   strings.TrimPrefix(u, "https://www.reddit.com"),
+					},
+				}
+
+				httpClient := &http.Client{
+					Timeout: 10 * time.Second,
+				}
+
+				response, e := httpClient.Do(request)
+
+				if e != nil {
+					l.Error("Error fetching image from Reddit: ", e)
+					return nil, e
+				}
+
+				if response.StatusCode != http.StatusOK {
+					l.Error("Error fetching image from Reddit: ", response.Status)
+					return nil, &echo.HTTPError{
+						Code:    response.StatusCode,
+						Message: "Error fetching image from Reddit",
+					}
+				}
+
+				return response, nil
+			})
+
+			if err != nil {
+				l.Error("Error getting latest image URL: ", err)
+				break
+			}
+
+			response, err := http.Get(latestImageVal)
+			if err != nil {
+				l.Error("Error fetching image from Reddit: ", err)
+
+				break
+			}
+
+			if response.StatusCode != http.StatusOK {
+				l.Error("Error fetching image from Reddit: ", response.Status)
+
+				break
+			}
+
+			imageDataBytes, err := io.ReadAll(response.Body)
+			if err != nil {
+				l.Error("Error reading image data: ", err)
+				_ = response.Body.Close()
+				break
+			}
+
+			_ = response.Body.Close()
+
+			imageData := string(imageDataBytes)
+			resized, err := resize.Shrink(imageData, uint(size), 70)
+
+			if err != nil {
+				l.Error("Error resizing image: ", err)
+				break
+			}
+
+			err = rc.Set(redis.CacheKey, resized, 10*time.Minute)
+			if err != nil {
+				l.Warn("could not cache image")
+			}
+
+			l.Info("Reddit image fetched and resized successfully, cached for 10 minutes.")
+		}
+
+		time.Sleep(10 * time.Minute)
+	}
+}

redis/client.go

@@ -0,0 +1,119 @@
+package redis
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"strconv"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+type contextKey string
+
+const redisKey contextKey = "redisClient"
+
+const CacheKey = "top-wallpaper:latestImage"
+
+type Cache interface {
+	Get(key string) (string, error)
+	Set(key string, value string, expiration int64) error
+	Close() error
+}
+
+type Redis struct {
+	client *redis.Client
+}
+
+func NewRedis() (*Redis, error) {
+
+	redisUrl := os.Getenv("REDIS_URL")
+	if redisUrl == "" {
+		return nil, errors.New("REDIS_URL not set, cannot initialize Redis client")
+	}
+
+	redisPort := os.Getenv("REDIS_PORT")
+	if redisPort == "" {
+		redisPort = "6379"
+	}
+
+	redisDb := os.Getenv("REDIS_DB")
+	if redisDb == "" {
+		redisDb = "0"
+	}
+
+	redisDbInt, err := strconv.ParseInt(redisDb, 10, 64)
+	if err != nil {
+		return nil, errors.New("REDIS_DB is not a valid integer, cannot initialize Redis client")
+	}
+
+	rc := redis.NewClient(&redis.Options{
+		Addr:     fmt.Sprintf("%s:%s", redisUrl, redisPort),
+		Password: os.Getenv("REDIS_PASSWORD"),
+		DB:       int(redisDbInt),
+	})
+
+	cmd := rc.Ping(context.Background())
+
+	if cmd.Err() != nil {
+		return nil, fmt.Errorf("could not connect to Redis: %v", cmd.Err())
+	}
+	if cmd.Val() != "PONG" {
+		return nil, fmt.Errorf("unexpected response from Redis: %s", cmd.Val())
+	}
+
+	return &Redis{
+		client: rc,
+	}, nil
+}
+
+func (r *Redis) Get(key string) (string, error) {
+	cmd := r.client.Get(context.Background(), key)
+	if cmd.Err() != nil {
+		if errors.Is(cmd.Err(), redis.Nil) {
+			return "", nil // Key does not exist
+		}
+		return "", fmt.Errorf("could not get value for key %s: %v", key, cmd.Err())
+	}
+	return cmd.Val(), nil
+}
+
+func (r *Redis) Set(key string, value string, expiration time.Duration) error {
+	cmd := r.client.Set(context.Background(), key, value, expiration)
+	if cmd.Err() != nil {
+		return fmt.Errorf("could not set value for key %s: %v", key, cmd.Err())
+	}
+	if cmd.Val() != "OK" {
+		return fmt.Errorf("unexpected response from Redis when setting key %s: %s", key, cmd.Val())
+	}
+
+	return nil
+}
+
+func (r *Redis) Close() error {
+	if r.client == nil {
+		return nil
+	}
+	err := r.client.Close()
+	if err != nil {
+		return fmt.Errorf("could not close Redis client: %v", err)
+	}
+	return nil
+}
+
+func WithContext(ctx context.Context, r *Redis) context.Context {
+	return context.WithValue(ctx, redisKey, r)
+}
+
+func FromContext(ctx context.Context) (*Redis, error) {
+	r, ok := ctx.Value(redisKey).(*Redis)
+	if !ok {
+		return nil, errors.New("no Redis client found in context")
+	}
+	if r == nil {
+		return nil, errors.New("redis client is nil")
+	}
+	return r, nil
+}

resize/resize.go

@@ -3,10 +3,11 @@ package resize
 import (
 	"bytes"
 	"fmt"
-	"github.com/nfnt/resize"
 	i "image"
 	"image/jpeg"
 	_ "image/png"
+
+	"github.com/nfnt/resize"
 )
 
 func Shrink(image string, maxSize uint, quality int) (string, error) {