feat: add day menu

src/lib/days.lua

@@ -0,0 +1,143 @@
+local utils = require("utils")
+local days = {}
+
+local DAY_CACHE_PATH = "/.cache/days"
+
+local CHOICES = {
+    create = "Create files",
+    example = "Run examples",
+    real = "Run with real input",
+    main = "Back to main menu"
+}
+
+---@class Day
+---@field day integer
+---@field title string?
+---@field puzzle1 boolean
+---@field puzzle2 boolean
+local Day = {day = 0, title = nil, puzzle1 = false, puzzle2 = false}
+Day.__index = Day
+
+---Creates a new Day object
+---@param dayI integer
+---@param puzzle1 boolean
+---@param puzzle2 boolean
+---@return Day
+function Day.new(dayI, puzzle1, puzzle2)
+    local day = {}
+    setmetatable(day, Day)
+    day.day = dayI
+    day.puzzle1 = puzzle1
+    day.puzzle2 = puzzle2
+    return day
+end
+
+---Returns the title of this day.
+---
+---This function looks in the following places, in order:
+---1. self.title
+---2. Cache directory (DAY_CACHE_PATH)
+---3. HTTP request to adventofcode.com
+---@return string
+function Day:getTitle()
+    if self.title then
+        return self.title
+    end
+    local cachePath = DAY_CACHE_PATH .. ("/%02d.txt"):format(self.day)
+    if fs.exists(cachePath) then
+        local cache = fs.open(cachePath, "r")
+        if cache then
+            local title = cache.readLine()
+            cache.close()
+            if title then
+                self.title = title
+                return title
+            end
+        end
+    end
+    fs.makeDir(DAY_CACHE_PATH)
+    local res = http.get("https://adventofcode.com/2024/day/" .. self.day)
+    local title = "Day " .. self.day
+    if res then
+        local body = res.readAll() or ""
+        local htmlTitle = body:match("%-%-%- (Day %d+: .-) %-%-%-")
+        if htmlTitle then
+            title = htmlTitle
+            self.title = title
+            local cache = fs.open(cachePath, "w")
+            if cache then
+                cache.writeLine(title)
+                cache.close()
+            end
+        end
+    end
+    return title
+end
+
+function Day:srcDir()
+    return SRC_PATH .. ("/day%02d"):format(self.day)
+end
+
+function Day:examplePath(suffix)
+    local filename = ("day%02d"):format(self.day)
+    if suffix then
+        filename = filename .. "_" .. suffix
+    end
+    return RES_PATH .. "/examples/" .. filename .. ".txt"
+end
+
+function Day:inputPath()
+    local filename = ("day%02d"):format(self.day)
+    return RES_PATH .. "/inputs/" .. filename .. ".txt"
+end
+
+
+---Creates the files for this day.
+---
+---This method creates the following files:
+---- Script for puzzle 1
+---- Script for puzzle 2
+---- Example input file
+---- Real input file
+function Day:createFiles()
+    local srcDir = self:srcDir()
+    fs.makeDir(srcDir)
+    local files = {
+        srcDir .. "/puzzle1.lua",
+        srcDir .. "/puzzle2.lua",
+        self:examplePath(),
+        self:inputPath()
+    }
+    for _, path in ipairs(files) do
+        local f = fs.open(path, "a")
+        if f then
+            f.close()
+        else
+            printError("Could not create file " .. path)
+        end
+    end
+end
+
+---Displays this day and prompts the user with possible actions
+function Day:show()
+    term.clear()
+    term.setCursorPos(1, 1)
+    term.setTextColor(colors.green)
+    print(" -*- [ " .. self:getTitle() .. " ] -*-")
+
+    if fs.exists(self:srcDir()) then
+        local c = utils.promptChoices({CHOICES.example, CHOICES.real, CHOICES.main})
+        if c == CHOICES.example then
+        end
+    else
+        local c = utils.promptChoices({CHOICES.create, CHOICES.main})
+        if c == CHOICES.create then
+            self:createFiles()
+        end
+    end
+    print("Puzzle 1")
+end
+
+days.Day = Day
+
+return days