1 files changed, 150 insertions, 0 deletions
diff --git a/modules/numbers.go b/modules/numbers.go
new file mode 100644
index 0000000..2d19b9f
--- /dev/null
+++ b/modules/numbers.go
@@ -0,0 +1,150 @@
+package modules
+
+import (
+	"errors"
+)
+
+type Pattern [][]bool
+
+var DigitPatterns = map[int]Pattern{
+	0: {
+		{true, true, true},
+		{true, false, true},
+		{true, false, true},
+		{true, false, true},
+		{true, true, true},
+	},
+	1: {
+		{false, true, false},
+		{true, true, false},
+		{false, true, false},
+		{false, true, false},
+		{true, true, true},
+	},
+	2: {
+		{true, true, true},
+		{false, false, true},
+		{true, true, true},
+		{true, false, false},
+		{true, true, true},
+	},
+	3: {
+		{true, true, true},
+		{false, false, true},
+		{true, true, true},
+		{false, false, true},
+		{true, true, true},
+	},
+	4: {
+		{true, false, true},
+		{true, false, true},
+		{true, true, true},
+		{false, false, true},
+		{false, false, true},
+	},
+	5: {
+		{true, true, true},
+		{true, false, false},
+		{true, true, true},
+		{false, false, true},
+		{true, true, true},
+	},
+	6: {
+		{true, true, true},
+		{true, false, false},
+		{true, true, true},
+		{true, false, true},
+		{true, true, true},
+	},
+	7: {
+		{true, true, true},
+		{false, false, true},
+		{false, true, false},
+		{false, true, false},
+		{false, true, false},
+	},
+	8: {
+		{true, true, true},
+		{true, false, true},
+		{true, true, true},
+		{true, false, true},
+		{true, true, true},
+	},
+	9: {
+		{true, true, true},
+		{true, false, true},
+		{true, true, true},
+		{false, false, true},
+		{true, true, true},
+	},
+}
+
+var SymbolPatterns = map[string]Pattern{
+	"celsius": {
+		{true, false, false, false, false},
+		{false, false, true, true, false},
+		{false, true, false, false, false},
+		{false, true, false, false, false},
+		{false, false, true, true, false},
+	},
+	"fahrenheit": {
+		{true, false, true, true, false},
+		{false, false, true, false, false},
+		{false, false, true, true, false},
+		{false, false, true, false, false},
+		{false, false, true, false, false},
+	},
+	"percent": {
+		{false, false, false, false, false},
+		{false, true, false, false, true},
+		{false, false, false, true, false},
+		{false, false, true, false, false},
+		{false, true, false, false, true},
+	},
+}
+
+func InsertPattern(grid [][]bool, pattern Pattern, row, col int) {
+	for i, rowPattern := range pattern {
+		for j, val := range rowPattern {
+			if row+i < len(grid) && col+j < len(grid[0]) {
+				grid[row+i][col+j] = val
+			}
+		}
+	}
+}
+
+func CreateNumberGrid(value int, symbol string, row int) ([][]bool, error) {
+	if value < 0 || value >= 1000 {
+		return nil, errors.New("value must be between 0 and 999")
+	}
+	if _, ok := SymbolPatterns[symbol]; !ok {
+		return nil, errors.New("unsupported symbol")
+	}
+
+	grid := make([][]bool, 14)
+	for i := range grid {
+		grid[i] = make([]bool, 14)
+	}
+
+	var (
+		digits    []int
+		symbolCol int
+	)
+
+	if value < 100 {
+		digits = []int{value / 10, value % 10}
+		symbolCol = 9
+	} else {
+		digits = []int{value / 100, (value % 100) / 10, value % 10}
+		symbolCol = 13
+	}
+
+	col := 1
+	for _, digit := range digits {
+		InsertPattern(grid, DigitPatterns[digit], row, col)
+		col += 4
+	}
+	InsertPattern(grid, SymbolPatterns[symbol], row, symbolCol)
+
+	return grid, nil
+}