From 9a7863e5e0083a69f055795984819bced211cde5 Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.dev>
Date: Sun, 11 Aug 2024 01:52:07 +0100
Subject: [PATCH] Add edit_alternate.vim

https://github.com/tjdevries/edit_alternate.vim

This works for switching between classes and tests in Drupal modules,
which is something I was struggling to do with Projectionist.

Different to Projectionist, though, this plugin doesn't create an
alternate file if it doesn't exist, and doesn't prompt to select from
multiple options and returns the first matching one.
---
 lib/default.nix           |  4 ++++
 overlays/vim-plugins.nix  | 30 +++++++++++++++++++++++++++++
 plugin/edit_alternate.lua | 40 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 74 insertions(+)
 create mode 100644 plugin/edit_alternate.lua

diff --git a/lib/default.nix b/lib/default.nix
index a5809c9..d9c64df 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -187,6 +187,10 @@ rec {
       # Themes
       vimPlugins.catppuccin-nvim
 
+      vimPlugins.conf-vim
+      vimPlugins.edit-alternate-vim
+      vimPlugins.standard-vim
+
       # Configuration.
       opdavies-nvim
     ];
diff --git a/overlays/vim-plugins.nix b/overlays/vim-plugins.nix
index ff9c6f7..8130ba2 100644
--- a/overlays/vim-plugins.nix
+++ b/overlays/vim-plugins.nix
@@ -1,5 +1,35 @@
 final: prev: {
   vimPlugins = prev.vimPlugins // {
+    conf-vim = final.vimUtils.buildVimPlugin {
+      name = "conf-vim";
+      src = final.fetchFromGitHub {
+        owner = "tjdevries";
+        repo = "conf.vim";
+        rev = "master";
+        sha256 = "AjiTJsoim0BAnyfqk1IQzNsa6jhFM2+A66E7q9sJqz0=";
+      };
+    };
+
+    edit-alternate-vim = final.vimUtils.buildVimPlugin {
+      name = "edit-alternate-vim";
+      src = final.fetchFromGitHub {
+        owner = "tjdevries";
+        repo = "edit_alternate.vim";
+        rev = "master";
+        sha256 = "mEKnqYAhgrdxPRoKf4S4yYecdFIHGg8bDxpqPuC1+S4=";
+      };
+    };
+
+    standard-vim = final.vimUtils.buildVimPlugin {
+      name = "standard-vim";
+      src = final.fetchFromGitHub {
+        owner = "tjdevries";
+        repo = "standard.vim";
+        rev = "master";
+        sha256 = "9VwkvV1Dv6cE4uDkPp36DozjWJOclDR883yDMYw000E=";
+      };
+    };
+
     tabline-vim = final.vimUtils.buildVimPlugin {
       name = "tabline-vim";
       src = final.fetchFromGitHub {
diff --git a/plugin/edit_alternate.lua b/plugin/edit_alternate.lua
new file mode 100644
index 0000000..293a28b
--- /dev/null
+++ b/plugin/edit_alternate.lua
@@ -0,0 +1,40 @@
+vim.fn["edit_alternate#rule#add"]("php", function(filename)
+  if filename:find "Test.php$" then
+    filename = filename:gsub("Test.php$", ".php")
+
+    if filename:find "tests/src/" then
+      -- Drupal tests. Remove the `src/{type}` from the path.
+      return filename:gsub("tests/src/(.-)/", "src/")
+    else
+      return filename:gsub("tests/", "src/")
+    end
+  else
+    filename = filename:gsub(".php$", "Test.php")
+
+    if filename:find "modules/custom" then
+      -- Drupal test types.
+      local test_types = { "Functional", "FunctionalJavaScript", "Kernel", "Unit" }
+
+      for _, test_type in ipairs(test_types) do
+        local filename_with_test_type = filename:gsub("src/", string.format("tests/src/%s/", test_type))
+
+        -- Return the first matching test file that exists.
+        if vim.fn.filereadable(filename_with_test_type) == 1 then
+          return filename_with_test_type
+        end
+      end
+    end
+  end
+end)
+
+if vim.fn.filereadable "fractal.config.js" == 1 then
+  vim.fn["edit_alternate#rule#add"]("twig", function(filename)
+    return (filename:gsub("%.twig$", ".config.yml"))
+  end)
+
+  vim.fn["edit_alternate#rule#add"]("yml", function(filename)
+    return (filename:gsub("%.config.yml$", ".twig"))
+  end)
+end
+
+vim.keymap.set("n", "<leader>ea", "<CMD>EditAlternate<CR>", { silent = true })