feat: item-attachments CRUD (#22)

* change /content/ -> /homebox/

* add cache to code generators

* update env variables to set data storage

* update env variables

* set env variables in prod container

* implement attachment post route (WIP)

* get attachment endpoint

* attachment download

* implement string utilities lib

* implement generic drop zone

* use explicit truncate

* remove clean dir

* drop strings composable for lib

* update item types and add attachments

* add attachment API

* implement service context

* consolidate API code

* implement editing attachments

* implement upload limit configuration

* improve error handling

* add docs for max upload size

* fix test cases

backend/pkgs/pathlib/pathlib_test.go

@@ -0,0 +1,94 @@
+package pathlib
+
+import (
+	"testing"
+)
+
+func Test_hasConflict(t *testing.T) {
+	type args struct {
+		path      string
+		neighbors []string
+	}
+	tests := []struct {
+		name string
+		args args
+		want bool
+	}{
+		{
+			name: "no conflict",
+			args: args{
+				path:      "foo",
+				neighbors: []string{"bar", "baz"},
+			},
+			want: false,
+		},
+		{
+			name: "conflict",
+			args: args{
+				path:      "foo",
+				neighbors: []string{"bar", "foo"},
+			},
+			want: true,
+		},
+		{
+			name: "conflict with different case",
+			args: args{
+				path:      "foo",
+				neighbors: []string{"bar", "Foo"},
+			},
+			want: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := hasConflict(tt.args.path, tt.args.neighbors); got != tt.want {
+				t.Errorf("hasConflict() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestSafePath(t *testing.T) {
+	// override dirReader
+	dirReader = func(name string) []string {
+		return []string{"bar.pdf", "bar (1).pdf", "bar (2).pdf"}
+	}
+
+	type args struct {
+		path string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "no conflict",
+			args: args{
+				path: "/foo/foo.pdf",
+			},
+			want: "/foo/foo.pdf",
+		},
+		{
+			name: "conflict",
+			args: args{
+				path: "/foo/bar.pdf",
+			},
+			want: "/foo/bar (3).pdf",
+		},
+		{
+			name: "conflict with different case",
+			args: args{
+				path: "/foo/BAR.pdf",
+			},
+			want: "/foo/BAR (3).pdf",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := Safe(tt.args.path); got != tt.want {
+				t.Errorf("SafePath() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}