chore: add issue templates

use `vim.g` for setup

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -0,0 +1,78 @@
+name: Bug Report
+description: Report a bug
+title: 'bug: '
+labels: [bug]
+body:
+  - type: checkboxes
+    attributes:
+      label: Prerequisites
+      options:
+        - label:
+            I have searched [existing
+            issues](https://github.com/barrettruth/cp.nvim/issues)
+          required: true
+        - label: I have updated to the latest version
+          required: true
+
+  - type: textarea
+    attributes:
+      label: 'Neovim version'
+      description: 'Output of `nvim --version`'
+      render: text
+    validations:
+      required: true
+
+  - type: input
+    attributes:
+      label: 'Operating system'
+      placeholder: 'e.g. Arch Linux, macOS 15, Ubuntu 24.04'
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Description
+      description: What happened? What did you expect?
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Steps to reproduce
+      description: Minimal steps to trigger the bug
+      value: |
+        1.
+        2.
+        3.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: 'Health check'
+      description: 'Output of `:checkhealth cp`'
+      render: text
+
+  - type: textarea
+    attributes:
+      label: Minimal reproduction
+      description: |
+        Save the script below as `repro.lua`, edit if needed, and run:
+        ```
+        nvim -u repro.lua
+        ```
+        Confirm the bug reproduces with this config before submitting.
+      render: lua
+      value: |
+        vim.env.LAZY_STDPATH = '.repro'
+        load(vim.fn.system('curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua'))()
+        require('lazy.nvim').setup({
+          spec = {
+            {
+              'barrett-ruth/cp.nvim',
+              opts = {},
+            },
+          },
+        })
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yaml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Questions
+    url: https://github.com/barrettruth/cp.nvim/discussions
+    about: Ask questions and discuss ideas

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -0,0 +1,30 @@
+name: Feature Request
+description: Suggest a feature
+title: 'feat: '
+labels: [enhancement]
+body:
+  - type: checkboxes
+    attributes:
+      label: Prerequisites
+      options:
+        - label:
+            I have searched [existing
+            issues](https://github.com/barrettruth/cp.nvim/issues)
+          required: true
+
+  - type: textarea
+    attributes:
+      label: Problem
+      description: What problem does this solve?
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Proposed solution
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Alternatives considered

.github/workflows/luarocks.yaml

@@ -3,7 +3,7 @@ name: luarocks
 on:
   push:
     tags:
-      - "v*"
+      - 'v*'
 
 jobs:
   ci:

.pre-commit-config.yaml

@@ -25,7 +25,7 @@ repos:
     hooks:
       - id: prettier
         name: prettier
-        files: \.(md|,toml,yaml,sh)$
+        files: \.(md|toml|ya?ml|sh)$
 
   - repo: local
     hooks:

README.md

@@ -19,6 +19,15 @@ https://github.com/user-attachments/assets/e81d8dfb-578f-4a79-9989-210164fc0148
 - **Language agnostic**: Works with any language
 - **Diff viewer**: Compare expected vs actual output with 3 diff modes
 
+## Installation
+
+Install using your package manager of choice or via
+[luarocks](https://luarocks.org/modules/barrettruth/cp.nvim):
+
+```
+luarocks install cp.nvim
+```
+
 ## Optional Dependencies
 
 - [uv](https://docs.astral.sh/uv/) for problem scraping

cp.nvim-scm-1.rockspec

@@ -2,7 +2,7 @@ rockspec_format = '3.0'
 package = 'cp.nvim'
 version = 'scm-1'
 
-source = { url = 'git://github.com/barrett-ruth/cp.nvim' }
+source = { url = 'git://github.com/barrettruth/cp.nvim' }
 build = { type = 'builtin' }
 
 test_dependencies = {

doc/cp.nvim.txt

@@ -205,71 +205,66 @@ Debug Builds ~
 ==============================================================================
 CONFIGURATION                                                      *cp-config*
 
-Here's an example configuration with lazy.nvim:
+Configuration is done via `vim.g.cp_config`. Set this before using the plugin:
 >lua
-    {
-      'barrett-ruth/cp.nvim',
-      cmd = 'CP',
-      build = 'uv sync',
-      opts = {
-        languages = {
-          cpp = {
-            extension = 'cc',
-            commands = {
-              build = { 'g++', '-std=c++17', '{source}', '-o', '{binary}',
-              '-fdiagnostics-color=always' },
-              run   = { '{binary}' },
-              debug = { 'g++', '-std=c++17', '-fsanitize=address,undefined',
-                        '{source}', '-o', '{binary}' },
-            },
-          },
-          python = {
-            extension = 'py',
-            commands = {
-              run   = { 'python', '{source}' },
-              debug = { 'python', '{source}' },
-            },
+    vim.g.cp_config = {
+      languages = {
+        cpp = {
+          extension = 'cc',
+          commands = {
+            build = { 'g++', '-std=c++17', '{source}', '-o', '{binary}',
+            '-fdiagnostics-color=always' },
+            run   = { '{binary}' },
+            debug = { 'g++', '-std=c++17', '-fsanitize=address,undefined',
+                      '{source}', '-o', '{binary}' },
           },
         },
-        platforms = {
-          cses = {
-            enabled_languages = { 'cpp', 'python' },
-            default_language  = 'cpp',
-            overrides = {
-              cpp = { extension = 'cpp', commands = { build = { ... } } }
-            },
-          },
-          atcoder = {
-            enabled_languages = { 'cpp', 'python' },
-            default_language  = 'cpp',
-          },
-          codeforces = {
-            enabled_languages = { 'cpp', 'python' },
-            default_language  = 'cpp',
+        python = {
+          extension = 'py',
+          commands = {
+            run   = { 'python', '{source}' },
+            debug = { 'python', '{source}' },
           },
         },
-        open_url = true,
-        debug = false,
-        ui = {
-          ansi = true,
-          run = {
-            width = 0.3,
-            next_test_key = '<c-n>',  -- or nil to disable
-            prev_test_key = '<c-p>',  -- or nil to disable
+      },
+      platforms = {
+        cses = {
+          enabled_languages = { 'cpp', 'python' },
+          default_language  = 'cpp',
+          overrides = {
+            cpp = { extension = 'cpp', commands = { build = { ... } } }
           },
-          panel = {
-            diff_modes = { 'side-by-side', 'git', 'vim' },
-            max_output_lines = 50,
-          },
-          diff = {
-            git = {
-              args = { 'diff', '--no-index', '--word-diff=plain',
-                       '--word-diff-regex=.', '--no-prefix' },
-            },
-          },
-          picker = 'telescope',
         },
-      }
+        atcoder = {
+          enabled_languages = { 'cpp', 'python' },
+          default_language  = 'cpp',
+        },
+        codeforces = {
+          enabled_languages = { 'cpp', 'python' },
+          default_language  = 'cpp',
+        },
+      },
+      open_url = true,
+      debug = false,
+      ui = {
+        ansi = true,
+        run = {
+          width = 0.3,
+          next_test_key = '<c-n>',  -- or nil to disable
+          prev_test_key = '<c-p>',  -- or nil to disable
+        },
+        panel = {
+          diff_modes = { 'side-by-side', 'git', 'vim' },
+          max_output_lines = 50,
+        },
+        diff = {
+          git = {
+            args = { 'diff', '--no-index', '--word-diff=plain',
+                     '--word-diff-regex=.', '--no-prefix' },
+          },
+        },
+        picker = 'telescope',
+      },
     }
 <
 
@@ -279,7 +274,7 @@ the default; per-platform overrides can tweak 'extension' or 'commands'.
 
 For example, to run CodeForces contests with Python by default:
 >lua
-    {
+    vim.g.cp_config = {
       platforms = {
         codeforces = {
           default_language  = 'python',
@@ -290,7 +285,7 @@ For example, to run CodeForces contests with Python by default:
 Any language is supported provided the proper configuration. For example, to
 run CSES problems with Rust using the single schema:
 >lua
-    {
+    vim.g.cp_config = {
       languages = {
         rust = {
           extension = 'rs',

lua/cp/init.lua

@@ -11,25 +11,25 @@ if vim.fn.has('nvim-0.10.0') == 0 then
   return {}
 end
 
-local user_config = {}
-local config = nil
 local initialized = false
 
+local function ensure_initialized()
+  if initialized then
+    return
+  end
+  local user_config = vim.g.cp_config or {}
+  local config = config_module.setup(user_config)
+  config_module.set_current_config(config)
+  initialized = true
+end
+
 ---@return nil
 function M.handle_command(opts)
+  ensure_initialized()
   local commands = require('cp.commands')
   commands.handle_command(opts)
 end
 
-function M.setup(opts)
-  opts = opts or {}
-  user_config = opts
-  config = config_module.setup(user_config)
-  config_module.set_current_config(config)
-
-  initialized = true
-end
-
 function M.is_initialized()
   return initialized
 end

lua/cp/runner/execute.lua

@@ -194,6 +194,8 @@ function M.compile_problem(debug, on_complete)
     return
   end
 
+  require('cp.utils').ensure_dirs()
+
   local binary = debug and state.get_debug_file() or state.get_binary_file()
   local substitutions = { source = state.get_source_file(), binary = binary }
 

lua/cp/scraper.lua

@@ -186,7 +186,7 @@ function M.scrape_all_tests(platform, contest_id, callback)
         return
       end
       vim.schedule(function()
-        vim.system({ 'mkdir', '-p', 'build', 'io' }):wait()
+        require('cp.utils').ensure_dirs()
         local config = require('cp.config')
         local base_name = config.default_filename(contest_id, ev.problem_id)
         for i, t in ipairs(ev.tests) do

lua/cp/ui/views.lua

@@ -13,6 +13,7 @@ local utils = require('cp.utils')
 
 local current_diff_layout = nil
 local current_mode = nil
+local io_view_running = false
 
 function M.disable()
   local active_panel = state.get_active_panel()
@@ -390,6 +391,8 @@ function M.ensure_io_view()
     return
   end
 
+  require('cp.utils').ensure_dirs()
+
   local source_file = state.get_source_file()
   if source_file then
     local source_file_abs = vim.fn.fnamemodify(source_file, ':p')
@@ -622,6 +625,12 @@ local function render_io_view_results(io_state, test_indices, mode, combined_res
 end
 
 function M.run_io_view(test_indices_arg, debug, mode)
+  if io_view_running then
+    logger.log('Tests already running', vim.log.levels.WARN)
+    return
+  end
+  io_view_running = true
+
   logger.log(('%s tests...'):format(debug and 'Debugging' or 'Running'), vim.log.levels.INFO, true)
 
   mode = mode or 'combined'
@@ -633,6 +642,7 @@ function M.run_io_view(test_indices_arg, debug, mode)
       'No platform/contest/problem configured. Use :CP <platform> <contest> [...] first.',
       vim.log.levels.ERROR
     )
+    io_view_running = false
     return
   end
 
@@ -640,6 +650,7 @@ function M.run_io_view(test_indices_arg, debug, mode)
   local contest_data = cache.get_contest_data(platform, contest_id)
   if not contest_data or not contest_data.index_map then
     logger.log('No test cases available.', vim.log.levels.ERROR)
+    io_view_running = false
     return
   end
 
@@ -656,11 +667,13 @@ function M.run_io_view(test_indices_arg, debug, mode)
     local combined = cache.get_combined_test(platform, contest_id, problem_id)
     if not combined then
       logger.log('No combined test available', vim.log.levels.ERROR)
+      io_view_running = false
       return
     end
   else
     if not run.load_test_cases() then
       logger.log('No test cases available', vim.log.levels.ERROR)
+      io_view_running = false
       return
     end
   end
@@ -681,6 +694,7 @@ function M.run_io_view(test_indices_arg, debug, mode)
             ),
             vim.log.levels.WARN
           )
+          io_view_running = false
           return
         end
       end
@@ -698,6 +712,7 @@ function M.run_io_view(test_indices_arg, debug, mode)
 
   local io_state = state.get_io_view_state()
   if not io_state then
+    io_view_running = false
     return
   end
 
@@ -711,6 +726,7 @@ function M.run_io_view(test_indices_arg, debug, mode)
 
   execute.compile_problem(debug, function(compile_result)
     if not vim.api.nvim_buf_is_valid(io_state.output_buf) then
+      io_view_running = false
       return
     end
 
@@ -730,6 +746,7 @@ function M.run_io_view(test_indices_arg, debug, mode)
 
       local ns = vim.api.nvim_create_namespace('cp_io_view_compile_error')
       utils.update_buffer_content(io_state.output_buf, lines, highlights, ns)
+      io_view_running = false
       return
     end
 
@@ -737,6 +754,7 @@ function M.run_io_view(test_indices_arg, debug, mode)
       local combined = cache.get_combined_test(platform, contest_id, problem_id)
       if not combined then
         logger.log('No combined test found', vim.log.levels.ERROR)
+        io_view_running = false
         return
       end
 
@@ -745,18 +763,21 @@ function M.run_io_view(test_indices_arg, debug, mode)
       run.run_combined_test(debug, function(result)
         if not result then
           logger.log('Failed to run combined test', vim.log.levels.ERROR)
+          io_view_running = false
           return
         end
 
         if vim.api.nvim_buf_is_valid(io_state.output_buf) then
           render_io_view_results(io_state, test_indices, mode, result, combined.input)
         end
+        io_view_running = false
       end)
     else
       run.run_all_test_cases(test_indices, debug, nil, function()
         if vim.api.nvim_buf_is_valid(io_state.output_buf) then
           render_io_view_results(io_state, test_indices, mode, nil, nil)
         end
+        io_view_running = false
       end)
     end
   end)
@@ -859,6 +880,9 @@ function M.toggle_panel(panel_opts)
   end
 
   local function refresh_panel()
+    if state.get_active_panel() ~= 'run' then
+      return
+    end
     if not test_buffers.tab_buf or not vim.api.nvim_buf_is_valid(test_buffers.tab_buf) then
       return
     end
@@ -884,6 +908,10 @@ function M.toggle_panel(panel_opts)
         vim.cmd.normal({ 'zz', bang = true })
       end)
     end
+
+    if test_windows.tab_win and vim.api.nvim_win_is_valid(test_windows.tab_win) then
+      vim.api.nvim_set_current_win(test_windows.tab_win)
+    end
   end
 
   local function navigate_test_case(delta)
@@ -942,6 +970,9 @@ function M.toggle_panel(panel_opts)
 
   local function finalize_panel()
     vim.schedule(function()
+      if state.get_active_panel() ~= 'run' then
+        return
+      end
       if config.ui.ansi then
         require('cp.ui.ansi').setup_highlight_groups()
       end

lua/cp/utils.lua

@@ -262,4 +262,8 @@ function M.cwd_executables()
   return out
 end
 
+function M.ensure_dirs()
+  vim.system({ 'mkdir', '-p', 'build', 'io' }):wait()
+end
+
 return M