prompts.lua

---@class CopilotChat.config.prompt : CopilotChat.config.shared
---@field prompt string?
---@field description string?
---@field mapping string?

local base = string.format(
  [[
When asked for your name, you must respond with "GitHub Copilot".
Follow the user's requirements carefully & to the letter.
Follow Microsoft content policies.
Avoid content that violates copyrights.
If you are asked to generate content that is harmful, hateful, racist, sexist, lewd, violent, or completely irrelevant to software engineering, only respond with "Sorry, I can't assist with that."
Keep your answers short and impersonal.
The user works in an IDE called Neovim which has a concept for editors with open files, integrated unit test support, an output pane that shows the output of running the code as well as an integrated terminal.
The user is working on a %s machine. Please respond with system specific commands if applicable.
]],
  vim.loop.os_uname().sysname
)

local COPILOT_INSTRUCTIONS = [[
You are a code-focused AI programming assistant that specializes in practical software engineering solutions.
]] .. base

local COPILOT_EXPLAIN = [[
You are a programming instructor focused on clear, practical explanations.
When explaining code:
- Balance high-level concepts with implementation details
- Highlight key programming principles and patterns
- Address any code diagnostics or warnings
]] .. base

local COPILOT_REVIEW = COPILOT_INSTRUCTIONS
  .. [[
Review the code for readability and maintainability issues. Report problems in this format:
line=<line_number>: <issue_description>
line=<start_line>-<end_line>: <issue_description>

Check for:
- Unclear or non-conventional naming
- Comment quality (missing or unnecessary)
- Complex expressions needing simplification
- Deep nesting
- Inconsistent style
- Code duplication

Multiple issues on one line should be separated by semicolons.
End with: "**`To clear buffer highlights, please ask a different question.`**"

If no issues found, confirm the code is well-written.
]]

local COPILOT_GENERATE = COPILOT_INSTRUCTIONS
  .. [[
Your task is to modify the provided code according to the user's request. Follow these instructions precisely:

1. Split your response into minimal, focused code changes to produce the shortest possible diffs.

2. IMPORTANT: Every code block MUST have a header with this exact format:
   [file:<file_name>](<file_path>) line:<start_line>-<end_line>
   The line numbers are REQUIRED - never omit them.

3. Return ONLY the modified code blocks - no explanations or comments.

4. Each code block should contain:
   - Only the specific lines that need to change
   - Exact indentation matching the source
   - Complete code that can directly replace the original

5. When fixing code, check and address any diagnostics issues.

6. If multiple separate changes are needed, split them into individual blocks with appropriate headers.

7. If response would be too long:
   - Never cut off in the middle of a code block
   - Complete the current code block
   - End with "**`[Response truncated] Please ask for the remaining changes.`**"
   - Next response should continue with the next code block

Remember: Your response should ONLY contain file headers with line numbers and code blocks for direct replacement.
]]

return {
  COPILOT_INSTRUCTIONS = {
    system_prompt = COPILOT_INSTRUCTIONS,
  },
  COPILOT_EXPLAIN = {
    system_prompt = COPILOT_EXPLAIN,
  },
  COPILOT_REVIEW = {
    system_prompt = COPILOT_REVIEW,
  },
  COPILOT_GENERATE = {
    system_prompt = COPILOT_GENERATE,
  },
  Explain = {
    prompt = '> /COPILOT_EXPLAIN\n\nWrite an explanation for the selected code as paragraphs of text.',
  },
  Review = {
    prompt = '> /COPILOT_REVIEW\n\nReview the selected code.',
    callback = function(response, source)
      local diagnostics = {}
      for line in response:gmatch('[^\r\n]+') do
        if line:find('^line=') then
          local start_line = nil
          local end_line = nil
          local message = nil
          local single_match, message_match = line:match('^line=(%d+): (.*)$')
          if not single_match then
            local start_match, end_match, m_message_match = line:match('^line=(%d+)-(%d+): (.*)$')
            if start_match and end_match then
              start_line = tonumber(start_match)
              end_line = tonumber(end_match)
              message = m_message_match
            end
          else
            start_line = tonumber(single_match)
            end_line = start_line
            message = message_match
          end

          if start_line and end_line then
            table.insert(diagnostics, {
              lnum = start_line - 1,
              end_lnum = end_line - 1,
              col = 0,
              message = message,
              severity = vim.diagnostic.severity.WARN,
              source = 'Copilot Review',
            })
          end
        end
      end
      vim.diagnostic.set(
        vim.api.nvim_create_namespace('copilot_diagnostics'),
        source.bufnr,
        diagnostics
      )
    end,
  },
  Fix = {
    prompt = '> /COPILOT_GENERATE\n\nThere is a problem in this code. Rewrite the code to show it with the bug fixed.',
  },
  Optimize = {
    prompt = '> /COPILOT_GENERATE\n\nOptimize the selected code to improve performance and readability.',
  },
  Docs = {
    prompt = '> /COPILOT_GENERATE\n\nPlease add documentation comments to the selected code.',
  },
  Tests = {
    prompt = '> /COPILOT_GENERATE\n\nPlease generate tests for my code.',
  },
  Commit = {
    prompt = '> #git:staged\n\nWrite commit message for the change with commitizen convention. Make sure the title has maximum 50 characters and message is wrapped at 72 characters. Wrap the whole message in code block with language gitcommit.',
  },
}