refactor: move git hook content to dedicated shell template file

- Extract post-commit hook shell script to lua/zoekt/templates/post-commit-hook.sh
- Update hook.lua to read template from file instead of embedding it
- Use {{INDEX_PATH}} placeholder for dynamic index path substitution
- Update tests to ensure runtime path includes plugin directory for template access

Co-authored-by: Amp <[email protected]>
Amp-Thread-ID: https://ampcode.com/threads/T-b6730e29-eb49-4ea9-9bea-b8c3ae74a841

Author: jupblb

lua/zoekt/hook.lua

@@ -2,38 +2,50 @@ local M = {}
 local config = require('zoekt.config')
 local utils = require('zoekt.utils')
 
+-- Get the path to the hook template
+local function get_hook_template_path()
+  -- Try to find the template in the runtime path
+  local template_paths = vim.api.nvim_get_runtime_file(
+    'lua/zoekt/templates/post-commit-hook.sh',
+    false
+  )
+
+  if #template_paths > 0 then
+    return template_paths[1]
+  end
+
+  -- Fallback: try to find it relative to this file
+  local source = debug.getinfo(1, 'S').source
+  if source:sub(1, 1) == '@' then
+    source = source:sub(2)
+  end
+  local dir = vim.fn.fnamemodify(source, ':p:h')
+  local template_path = dir .. '/templates/post-commit-hook.sh'
+
+  -- Check if file exists
+  if vim.fn.filereadable(template_path) == 1 then
+    return template_path
+  end
+
+  error('Could not find hook template file')
+end
+
 -- Create the post-commit hook content
 local function create_hook_content()
   local index_path = config.get_option('index_path')
+  local template_path = get_hook_template_path()
+
+  -- Read the template file
+  local file = io.open(template_path, 'r')
+  if not file then
+    error('Could not read hook template file: ' .. template_path)
+  end
+
+  local hook_content = file:read('*all')
+  file:close()
 
-  -- Create a standalone shell script that doesn't depend on Neovim
-  local hook_content = [[#!/usr/bin/env sh
-# Auto-generated by zoekt.nvim
-# This hook updates the Zoekt index after each commit
-
-# Get the repository root
-REPO_ROOT="$(git rev-parse --show-toplevel)"
-
-# Check if zoekt-git-index is available
-if ! command -v zoekt-git-index >/dev/null 2>&1; then
-  echo "Warning: zoekt-git-index not found in PATH. Skipping index update."
-  exit 0
-fi
-
-# Get the current branch name
-BRANCH="$(git rev-parse --abbrev-ref HEAD 2>/dev/null)"
-
-# Index the repository
-echo "Updating Zoekt index..."
-# Index HEAD
-zoekt-git-index -index "]] .. index_path .. [[" -branches HEAD "$REPO_ROOT"
-# Also index the current branch if we're on a branch (not detached HEAD)
-if [ "$BRANCH" != "HEAD" ]; then
-  zoekt-git-index -index "]] .. index_path .. [[" -branches "$BRANCH" "$REPO_ROOT"
-fi
-
-exit 0
-]]
+  -- Replace the placeholder with the actual index path
+  hook_content = hook_content:gsub('{{INDEX_PATH}}', index_path)
 
   return hook_content
 end

lua/zoekt/templates/post-commit-hook.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env sh
+# Auto-generated by zoekt.nvim
+# This hook updates the Zoekt index after each commit
+
+# Get the repository root
+REPO_ROOT="$(git rev-parse --show-toplevel)"
+
+# Check if zoekt-git-index is available
+if ! command -v zoekt-git-index >/dev/null 2>&1; then
+  echo "Warning: zoekt-git-index not found in PATH. Skipping index update."
+  exit 0
+fi
+
+# Get the current branch name
+BRANCH="$(git rev-parse --abbrev-ref HEAD 2>/dev/null)"
+
+# Index the repository
+echo "Updating Zoekt index..."
+# Index HEAD
+zoekt-git-index -index "{{INDEX_PATH}}" -branches HEAD "$REPO_ROOT"
+# Also index the current branch if we're on a branch (not detached HEAD)
+if [ "$BRANCH" != "HEAD" ]; then
+  zoekt-git-index -index "{{INDEX_PATH}}" -branches "$BRANCH" "$REPO_ROOT"
+fi
+
+exit 0

tests/zoekt_hook_spec.lua

@@ -9,6 +9,12 @@ describe('zoekt.hook', function()
     -- Store original CWD
     original_cwd = vim.fn.getcwd()
 
+    -- Ensure the plugin directory is in the runtime path for template loading
+    local plugin_dir = vim.fn.fnamemodify(original_cwd, ':p')
+    if not vim.tbl_contains(vim.opt.rtp:get(), plugin_dir) then
+      vim.opt.rtp:append(plugin_dir)
+    end
+
     -- Clear module cache
     package.loaded['zoekt.hook'] = nil
     package.loaded['zoekt.config'] = nil