From eb25c12b03b5174fcb4890016a8504a3d3367345 Mon Sep 17 00:00:00 2001
From: Tran Vo Son Tung <sontungexpt@gmail.com>
Date: Sun, 20 Aug 2023 11:00:12 +0700
Subject: [PATCH] perl: improve open url handler

---
 README.md                         |  1 +
 lua/url-open/modules/handlers.lua | 53 ++++++++++++++++++++++++++++---
 2 files changed, 50 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 033e23c..033e5b4 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,7 @@ default browser of your system.
   - http://example.com:8080
   - https://www.example.com:8443
   - ftp://ftp.example.com:2121
+- Allow you to open url from anywhere in the line if it only contains 1 url
 
 ## Installation
 
diff --git a/lua/url-open/modules/handlers.lua b/lua/url-open/modules/handlers.lua
index b3a0537..b7b9885 100644
--- a/lua/url-open/modules/handlers.lua
+++ b/lua/url-open/modules/handlers.lua
@@ -97,13 +97,58 @@ M.open_url = function(user_opts)
 		local shell_safe_url = fn.shellescape(url_to_open)
 		local command = ""
 		if vim.loop.os_uname().sysname == "Linux" then
-			command = "silent! !xdg-open " .. shell_safe_url
+			if fn.executable("xdg-open") == 1 then
+				command = "silent! !xdg-open " .. shell_safe_url
+			elseif fn.executable("gnome-open") then
+				command = "silent! !gnome-open " .. shell_safe_url
+			else
+				vim.schedule(
+					function()
+						vim.notify(
+							"No known command to open url on Linux",
+							vim.log.levels.ERROR,
+							{ title = "URL Handler" }
+						)
+					end
+				)
+				return
+			end
 		elseif vim.loop.os_uname().sysname == "Darwin" then
-			command = "silent! !open " .. shell_safe_url
+			if fn.executable("open") == 1 then
+				command = "silent! !open " .. shell_safe_url
+			else
+				vim.schedule(
+					function()
+						vim.notify(
+							"No known command to open url on MacOS",
+							vim.log.levels.ERROR,
+							{ title = "URL Handler" }
+						)
+					end
+				)
+				return
+			end
 		elseif vim.loop.os_uname().sysname == "Windows" then
-			command = "silent! !start " .. shell_safe_url
+			if fn.executable("start") == 1 then
+				command = "silent! !start " .. shell_safe_url
+			else
+				vim.schedule(
+					function()
+						vim.notify(
+							"No known command to open url on Windows",
+							vim.log.levels.ERROR,
+							{ title = "URL Handler" }
+						)
+					end
+				)
+				return
+			end
 		else
-			print("Unknown operating system.")
+			vim.schedule(
+				function()
+					vim.notify("Unknown operating system.", vim.log.levels.ERROR, { title = "URL Handler" })
+				end
+			)
 			return
 		end
 		M.call_cmd(command, {