add a bunch of git utility functions

neovim/.config/nvim/lua/user/utils.lua

@@ -1,3 +1,5 @@
+local Job = require("plenary.job")
+
 local M = {}
 
 M.yank = function(message)
@@ -51,4 +53,62 @@ M.lsp_organize_imports = function(bufnr, timeout)
   vim.lsp.buf_request_sync(bufnr, "workspace/executeCommand", params, timeout or 500)
 end
 
+M.get_commit_hash_for_current_line = function()
+  local fullpath = vim.api.nvim_buf_get_name(0)
+  local cwd = vim.loop.cwd()
+  local relative_path = string.gsub(fullpath, cwd .. "/", "")
+
+  local line = unpack(vim.api.nvim_win_get_cursor(0))
+
+  local f = io.popen("git blame -L " .. line .. ",+1 " .. relative_path, "r")
+  local data = f:read("*a")
+  f:close()
+
+  local commit_hash = vim.split(data, " ")[1]
+
+  return commit_hash
+end
+
+M.get_git_remote_url = function()
+  local f = io.popen("git remote get-url origin", "r")
+  local remote_url = f:read("*l")
+  f:close()
+
+  if string.sub(remote_url, 0, 4) == "git@" then
+    remote_url = string.gsub(remote_url, "git@", "")
+    remote_url = string.gsub(remote_url, ".git", "")
+    remote_url = string.gsub(remote_url, ":", "/")
+  end
+
+  if string.sub(remote_url, 0, 5) ~= "https" then
+    remote_url = "https://" .. remote_url
+  end
+
+  return remote_url
+end
+
+M.open_url_in_browser = function(url)
+  if vim.fn.has("win32") == 1 then
+    print("windows not supported, sorry")
+    return
+  end
+
+  local f = io.popen("xdg-open " .. url, "r")
+  f:close()
+end
+
+M.open_commit_on_github = function()
+  local commit_hash = M.get_commit_hash_for_current_line()
+  local remote_url = M.get_git_remote_url()
+
+  if commit_hash == "00000000" then
+    print("Not committed yet")
+    return
+  end
+
+  local commit_url = remote_url .. "/commit/" .. commit_hash
+
+  M.open_url_in_browser(commit_url)
+end
+
 return M