From cc5c9c6d1a4e6ec774b72fcdafc56e6350844456 Mon Sep 17 00:00:00 2001
From: potassium <arsenijser19@gmail.com>
Date: Sat, 24 Jan 2026 09:39:27 +0300
Subject: [PATCH] cleaning up, early http server draft

---
 http/http.go                              |  40 ++++++++++++++++++
 http/index.html                           |   4 ++
 {cmd => pkg}/downscale/downscale.go       |   0
 {cmd => pkg}/downscale/main.go            |   0
 {cmd => pkg}/mesh/8.clock.png             | Bin
 {cmd => pkg}/mesh/9p.go                   |   0
 {cmd => pkg}/mesh/mesh.go                 |   0
 {cmd => pkg}/mkpalette/palette.go         |   0
 {cmd => pkg}/negate/8.absolutecinema.png  | Bin
 {cmd => pkg}/negate/minus19blue           | Bin
 {cmd => pkg}/negate/minus19blue.go        |   0
 {cmd => pkg}/negate/mixed.go              |   0
 {cmd => pkg}/negate/negate                | Bin
 {cmd => pkg}/negate/negate.go             |   0
 {cmd => pkg}/negate/negated5.png          | Bin
 {cmd => pkg}/negate/negated8.png          | Bin
 {cmd => pkg}/negate/reshaded,negated8.png | Bin
 {cmd => pkg}/showpalette/.show.go.swp     | Bin
 {cmd => pkg}/showpalette/show.go          |   0
 util/.hex_test.go.swp                     | Bin 0 -> 12288 bytes
 util/hex.go                               |  32 +++++++++++++++
 util/hex_test.go                          |  47 ++++++++++++++++++++++
 util.go => util/util.go                   |   0
 23 files changed, 123 insertions(+)
 create mode 100644 http/http.go
 create mode 100644 http/index.html
 rename {cmd => pkg}/downscale/downscale.go (100%)
 rename {cmd => pkg}/downscale/main.go (100%)
 rename {cmd => pkg}/mesh/8.clock.png (100%)
 rename {cmd => pkg}/mesh/9p.go (100%)
 rename {cmd => pkg}/mesh/mesh.go (100%)
 rename {cmd => pkg}/mkpalette/palette.go (100%)
 rename {cmd => pkg}/negate/8.absolutecinema.png (100%)
 rename {cmd => pkg}/negate/minus19blue (100%)
 rename {cmd => pkg}/negate/minus19blue.go (100%)
 rename {cmd => pkg}/negate/mixed.go (100%)
 rename {cmd => pkg}/negate/negate (100%)
 rename {cmd => pkg}/negate/negate.go (100%)
 rename {cmd => pkg}/negate/negated5.png (100%)
 rename {cmd => pkg}/negate/negated8.png (100%)
 rename {cmd => pkg}/negate/reshaded,negated8.png (100%)
 rename {cmd => pkg}/showpalette/.show.go.swp (100%)
 rename {cmd => pkg}/showpalette/show.go (100%)
 create mode 100644 util/.hex_test.go.swp
 create mode 100644 util/hex.go
 create mode 100644 util/hex_test.go
 rename util.go => util/util.go (100%)

diff --git a/http/http.go b/http/http.go
new file mode 100644
index 0000000..8361f67
--- /dev/null
+++ b/http/http.go
@@ -0,0 +1,40 @@
+package main
+
+import (
+	"net/http"
+	"log"
+)
+
+type imageTransform struct {
+	image.Image
+	TransformFunc func(image.Image) image.Image
+}
+
+func (t imageTransform) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	
+}
+
+func indexHTML(w http.ResponseWriter, r *http.Request) {
+	f, err := os.Open("index.html")
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		log.Fatalln("error opening file:", err)
+		return
+	}
+	_, err := io.Copy(w, f)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		log.Println("copy error:", err)
+		return
+	}	
+}
+
+func main() {
+	http.HandleFunc("/", indexHTML)
+	http.Handle("POST /upload", imageTransform)
+
+	err := http.ListenAndServe(":8080", nil) 
+	if err != nil {
+		log.Panicln(err)
+	}
+}
diff --git a/http/index.html b/http/index.html
new file mode 100644
index 0000000..1dd1ca9
--- /dev/null
+++ b/http/index.html
@@ -0,0 +1,4 @@
+<form action="/upload" method="POST" enctype="multipart/form-data">
+    <input type="file" name="image" accept="image/*" required>
+    <button type="submit">Upload Image</button>
+</form>
diff --git a/cmd/downscale/downscale.go b/pkg/downscale/downscale.go
similarity index 100%
rename from cmd/downscale/downscale.go
rename to pkg/downscale/downscale.go
diff --git a/cmd/downscale/main.go b/pkg/downscale/main.go
similarity index 100%
rename from cmd/downscale/main.go
rename to pkg/downscale/main.go
diff --git a/cmd/mesh/8.clock.png b/pkg/mesh/8.clock.png
similarity index 100%
rename from cmd/mesh/8.clock.png
rename to pkg/mesh/8.clock.png
diff --git a/cmd/mesh/9p.go b/pkg/mesh/9p.go
similarity index 100%
rename from cmd/mesh/9p.go
rename to pkg/mesh/9p.go
diff --git a/cmd/mesh/mesh.go b/pkg/mesh/mesh.go
similarity index 100%
rename from cmd/mesh/mesh.go
rename to pkg/mesh/mesh.go
diff --git a/cmd/mkpalette/palette.go b/pkg/mkpalette/palette.go
similarity index 100%
rename from cmd/mkpalette/palette.go
rename to pkg/mkpalette/palette.go
diff --git a/cmd/negate/8.absolutecinema.png b/pkg/negate/8.absolutecinema.png
similarity index 100%
rename from cmd/negate/8.absolutecinema.png
rename to pkg/negate/8.absolutecinema.png
diff --git a/cmd/negate/minus19blue b/pkg/negate/minus19blue
similarity index 100%
rename from cmd/negate/minus19blue
rename to pkg/negate/minus19blue
diff --git a/cmd/negate/minus19blue.go b/pkg/negate/minus19blue.go
similarity index 100%
rename from cmd/negate/minus19blue.go
rename to pkg/negate/minus19blue.go
diff --git a/cmd/negate/mixed.go b/pkg/negate/mixed.go
similarity index 100%
rename from cmd/negate/mixed.go
rename to pkg/negate/mixed.go
diff --git a/cmd/negate/negate b/pkg/negate/negate
similarity index 100%
rename from cmd/negate/negate
rename to pkg/negate/negate
diff --git a/cmd/negate/negate.go b/pkg/negate/negate.go
similarity index 100%
rename from cmd/negate/negate.go
rename to pkg/negate/negate.go
diff --git a/cmd/negate/negated5.png b/pkg/negate/negated5.png
similarity index 100%
rename from cmd/negate/negated5.png
rename to pkg/negate/negated5.png
diff --git a/cmd/negate/negated8.png b/pkg/negate/negated8.png
similarity index 100%
rename from cmd/negate/negated8.png
rename to pkg/negate/negated8.png
diff --git a/cmd/negate/reshaded,negated8.png b/pkg/negate/reshaded,negated8.png
similarity index 100%
rename from cmd/negate/reshaded,negated8.png
rename to pkg/negate/reshaded,negated8.png
diff --git a/cmd/showpalette/.show.go.swp b/pkg/showpalette/.show.go.swp
similarity index 100%
rename from cmd/showpalette/.show.go.swp
rename to pkg/showpalette/.show.go.swp
diff --git a/cmd/showpalette/show.go b/pkg/showpalette/show.go
similarity index 100%
rename from cmd/showpalette/show.go
rename to pkg/showpalette/show.go
diff --git a/util/.hex_test.go.swp b/util/.hex_test.go.swp
new file mode 100644
index 0000000000000000000000000000000000000000..9f578a3b3e3091e7c4d8f62c722094b0b64274b3
GIT binary patch
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diff --git a/util/hex.go b/util/hex.go
new file mode 100644
index 0000000..65aa065
--- /dev/null
+++ b/util/hex.go
@@ -0,0 +1,32 @@
+package imageutils
+
+import (
+	"fmt"
+	"image/color"
+	"errors"
+)
+
+var ParseHexColorErr = errors.New("invalid length, must be 7 or 4")
+
+func ParseHexColor(s string) (c color.RGBA, err error) {
+	c.A = 0xff
+	switch len(s) {
+	case 7:
+		_, err = fmt.Sscanf(s, "#%02x%02x%02x", &c.R, &c.G, &c.B)
+	case 4:
+		_, err = fmt.Sscanf(s, "#%1x%1x%1x", &c.R, &c.G, &c.B)
+		// Double the hex digits:
+		c.R *= 17
+		c.G *= 17
+		c.B *= 17
+	default:
+		err = ParseHexColorErr
+
+	}
+	return
+}
+
+func ColorToHex(c color.Color) string {
+	r, g, b, _ := color.NRGBAModel.Convert(c).RGBA()
+	return fmt.Sprintf("#%02x%02x%02x", byte(r), byte(g), byte(b))
+}
diff --git a/util/hex_test.go b/util/hex_test.go
new file mode 100644
index 0000000..6a0123c
--- /dev/null
+++ b/util/hex_test.go
@@ -0,0 +1,47 @@
+package imageutils
+
+import (
+	"fmt"
+	"image/png"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// Returns path of first occured file
+// with png extension in user's home directory.
+func firstPNG(root string) (filename string,
+	err error) {
+	var fn filepath.WalkFunc = func(path string,
+		info os.FileInfo,
+		fileErr error) error {
+		if fileErr != nil {
+			return fileErr
+		}
+		if !info.IsDir() &&
+			filepath.Ext(path) == ".png" {
+			filename = path
+			return nil
+		}
+		return nil
+	}
+	err = filepath.Walk(root, fn)
+	return
+}
+
+func TestColorToHex(t *testing.T) {
+	root := os.Getenv("HOME")
+	path, err := firstPNG(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	f, err := os.Open(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	img, err := png.Decode(f)
+	if err != nil {
+		t.Fatal(err)
+	}
+	fmt.Println(ColorToHex(img.At(0, 0)))
+}
diff --git a/util.go b/util/util.go
similarity index 100%
rename from util.go
rename to util/util.go