From c7f2f95bc5440435fd314629d7a291eee44a4ec3 Mon Sep 17 00:00:00 2001
From: Sonny Bakker <sonny871@hotmail.com>
Date: Mon, 9 Dec 2024 20:26:16 +0100
Subject: [PATCH] Add files

---
 lua/source-link/init.lua | 84 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 lua/source-link/init.lua

diff --git a/lua/source-link/init.lua b/lua/source-link/init.lua
new file mode 100644
index 0000000..97500ab
--- /dev/null
+++ b/lua/source-link/init.lua
@@ -0,0 +1,84 @@
+local function file_exists(file_path)
+  local file = io.open(file_path, "rb")
+  if file then file:close() end
+  return file ~= nil
+end
+
+local remote_prefix_patterns = {'ssh://', 'http[s]?://', '%w+@'}
+
+local function transform_url(remote)
+  for _, pattern in pairs(remote_prefix_patterns) do
+    local regex_pattern = string.format('^%s(.*)', pattern)
+    if remote:match(regex_pattern) then
+      local _url = remote:match(regex_pattern, 1)
+      _url = _url:gsub('(:)(%a+)', '/%2')
+      _url = _url:gsub('.git$', '')
+
+      if not _url:match('^http[s]?://') then
+        return string.format('%s%s', 'https://', _url)
+      end
+
+      return _url
+    end
+  end
+end
+
+-- TODO: add more providers
+-- TODO: add feature to specify provider
+local provider_mapping = {
+  ['github'] = '%s/blob/%s/%s#L%i',
+  ['bitbucket'] = '%s/src/%s/%s#lines-%i',
+  ['forgejo'] = '%s/src/commit/%s/%s#L%i',
+}
+
+local function get_provider_template(remote)
+  local transformed_url = transform_url(remote)
+
+  if not transformed_url then return end
+
+  for domain, template_string in pairs(provider_mapping) do
+    if transformed_url:match(domain) then
+      return transformed_url, template_string
+    end
+  end
+end
+
+local function source_open()
+  local git_conf_path = '.git/config'
+
+  -- TODO: determine based on recursively traversing upwards in path
+  if not file_exists(git_conf_path) then return end
+
+  local _remote_output = io.popen('git remote get-url origin', 'r')
+
+  -- TODO: test with other refs
+  local _commit_output = io.popen('git show --pretty=%H HEAD', 'r')
+
+  if _remote_output == nil or _commit_output == nil then return end
+
+  local line_number = unpack(vim.api.nvim_win_get_cursor(0))
+  local filepath = vim.api.nvim_buf_get_name(0)
+  local relative_filepath = vim.fn.fnamemodify(filepath, ':.')
+
+  local remote = _remote_output:read()
+  local branch = _commit_output:read()
+
+  local transformed_url, template_string = get_provider_template(remote)
+
+  for _, variable in pairs({ filepath, transformed_url, template_string }) do
+    if variable == nil then
+      return
+    end
+  end
+
+  local template_args = { transformed_url, branch, relative_filepath, line_number }
+  local url = template_string:format(unpack(template_args))
+
+  os.execute(('xdg-open %s'):format(url))
+end
+
+local function setup(opts)
+  vim.api.nvim_create_user_command('SourceOpen', source_open, {})
+end
+
+return { setup = setup }