fix: hash urls/ids for temp paths

lua/image/image.lua

@@ -353,7 +353,7 @@ local from_url = function(url, options, callback, state)
     return
   end
 
-  local tmp_path = state.tmp_dir .. "/" .. utils.base64.encode(url) .. ".png"
+  local tmp_path = state.tmp_dir .. "/" .. utils.hash.simple(url) .. ".png"
   local stdout = vim.loop.new_pipe()
 
   vim.loop.spawn("curl", {

lua/image/utils/document.lua

@@ -53,7 +53,13 @@ local create_document_integration = function(config)
           local cursor_row = vim.api.nvim_win_get_cursor(window.id)[1] - 1 -- 0-indexed row
 
           for _, match in ipairs(matches) do
-            local id = string.format("%d:%d:%d:%s", window.id, window.buffer, match.range.start_row, match.url)
+            local id = string.format(
+              "%d:%d:%d:%s",
+              window.id,
+              window.buffer,
+              match.range.start_row,
+              utils.hash.simple(match.url)
+            )
 
             if ctx.options.only_render_image_at_cursor and match.range.start_row ~= cursor_row then goto continue end
 

lua/image/utils/hash.lua

@@ -0,0 +1,14 @@
+local bit = require("bit")
+
+local filename = function(str)
+  local hash = 5381
+  for i = 1, #str do
+    local char = string.byte(str, i)
+    hash = bit.lshift(hash, 5) + hash + char
+  end
+  return hash
+end
+
+return {
+  simple = filename,
+}

lua/image/utils/init.lua

@@ -1,4 +1,5 @@
 local base64 = require("image/utils/base64")
+local hash = require("image/utils/hash")
 local logger = require("image/utils/logger")
 local magic = require("image/utils/magic")
 local math = require("image/utils/math")
@@ -20,4 +21,5 @@ return {
   offsets = offsets,
   tmux = tmux,
   magic = magic,
+  hash = hash,
 }