feat: document search nvim plugin

.config/nvim/lua/casraf/lib/doc_search.lua

@@ -0,0 +1,101 @@
+local M = {}
+
+M.config = {
+  doc_sources = {},
+  keymap = "<leader>ds",
+}
+
+function M.setup(opts)
+  M.config = vim.tbl_deep_extend("force", M.config, opts or {})
+
+  if M.config.keymap then
+    vim.keymap.set({ "n", "v" }, M.config.keymap, function() M.search() end, { desc = "Search Documentation" })
+  end
+end
+
+local function get_visual_selection()
+  local mode = vim.fn.mode()
+  if mode ~= 'v' and mode ~= 'V' and mode ~= '\22' then
+    return nil
+  end
+
+  local start_pos = vim.fn.getpos("'<")
+  local end_pos = vim.fn.getpos("'>")
+  local start_row, start_col = start_pos[2], start_pos[3]
+  local end_row, end_col = end_pos[2], end_pos[3]
+
+  if start_row > end_row or (start_row == end_row and start_col > end_col) then
+    start_row, end_row = end_row, start_row
+    start_col, end_col = end_col, start_col
+  end
+
+  local lines = vim.api.nvim_buf_get_lines(0, start_row - 1, end_row, false)
+  if #lines == 0 then return nil end
+
+  lines[1] = lines[1]:sub(start_col)
+  lines[#lines] = lines[#lines]:sub(1, end_col - (start_row == end_row and start_col - 1 or 0))
+
+  ---@diagnostic disable-next-line: param-type-mismatch
+  local selection = table.concat(lines, ' ')
+
+  local unquoted = selection:match('^"(.-)"$')
+      or selection:match("^'(.-)'$")
+      or selection:match('^`(.-)`$')
+      or selection
+
+  return unquoted
+end
+
+local function get_word()
+  if vim.fn.mode() == 'v' or vim.fn.mode() == 'V' or vim.fn.mode() == '' then
+    return get_visual_selection()
+  else
+    return vim.fn.expand("<cword>")
+  end
+end
+
+function M.search()
+  local filetype = vim.bo.filetype
+  local word = get_word()
+  if not word or word == "" then
+    vim.notify("No word selected", vim.log.levels.WARN)
+    return
+  end
+
+  local sources = M.config.doc_sources[filetype]
+  if not sources then
+    vim.notify("No doc sources for filetype: " .. filetype, vim.log.levels.INFO)
+    return
+  end
+
+  local function open_doc(source)
+    local url = source.url:gsub("{query}", vim.fn.escape(word, " "))
+    local open_cmd
+
+    if vim.fn.has("mac") == 1 then
+      open_cmd = "open"
+    elseif vim.fn.has("unix") == 1 then
+      open_cmd = "xdg-open"
+    elseif vim.fn.has("win32") == 1 then
+      open_cmd = "start"
+    else
+      vim.notify("Unsupported OS for opening URLs", vim.log.levels.ERROR)
+      return
+    end
+
+    vim.fn.jobstart({ open_cmd, url }, { detach = true })
+  end
+
+  if #sources == 1 then
+    open_doc(sources[1])
+  else
+    vim.ui.select(sources, {
+      prompt = "Select Documentation Source",
+      format_item = function(item) return item.name end,
+    }, function(choice)
+      if choice then open_doc(choice) end
+    end)
+  end
+end
+
+return M

.config/nvim/lua/casraf/plugins/doc_search.lua

@@ -0,0 +1,30 @@
+return {
+  "nvim-lua/plenary.nvim",
+  config = function()
+    require("casraf.lib.doc_search").setup({
+      keymap = "<leader>dd",
+      doc_sources = {
+        javascript = {
+          { name = "MDN", url = "https://developer.mozilla.org/en-US/search?q={query}" },
+        },
+        javascriptreact = {
+          { name = "MDN",   url = "https://developer.mozilla.org/en-US/search?q={query}" },
+          { name = "React", url = "https://reactjs.org/search?q={query}" },
+        },
+        typescript = {
+          { name = "MDN", url = "https://developer.mozilla.org/en-US/search?q={query}" },
+        },
+        typescriptreact = {
+          { name = "MDN",   url = "https://developer.mozilla.org/en-US/search?q={query}" },
+          { name = "React", url = "https://reactjs.org/search?q={query}" },
+        },
+        dart = {
+          { name = "Dart", url = "https://dart.dev/search?q={query}" },
+        },
+        css = {
+          { name = "MDN", url = "https://developer.mozilla.org/en-US/search?q={query}" },
+        },
+      },
+    })
+  end,
+}