nvim-config/lua/plugins/ai.lua

-- AI Chat Integration using avante.nvim
-- Supports: Anthropic Claude, OpenAI, Google Gemini, Copilot, and more
-- API keys via environment variables:
--   ANTHROPIC_API_KEY, OPENAI_API_KEY, GEMINI_API_KEY
-- Or scoped: AVANTE_ANTHROPIC_API_KEY, AVANTE_OPENAI_API_KEY, etc.

return {
  {
    "yetone/avante.nvim",
    event = "VeryLazy",
    version = false, -- Never set to "*"
    build = "make",
    dependencies = {
      "nvim-treesitter/nvim-treesitter",
      "stevearc/dressing.nvim",
      "nvim-lua/plenary.nvim",
      "MunifTanjim/nui.nvim",
      "nvim-tree/nvim-web-devicons",
      {
        -- Image support (optional)
        "HakonHarnes/img-clip.nvim",
        event = "VeryLazy",
        opts = {
          default = {
            embed_image_as_base64 = false,
            prompt_for_file_name = false,
            drag_and_drop = {
              insert_mode = true,
            },
          },
        },
      },
      {
        -- Markdown rendering in Avante
        "MeanderingProgrammer/render-markdown.nvim",
        opts = {
          file_types = { "markdown", "Avante" },
        },
        ft = { "markdown", "Avante" },
      },
    },
    ---@module 'avante'
    ---@type avante.Config
    opts = {
      -- Default provider (switch with :AvanteProvider command)
      -- Options: "claude", "openai", "azure", "gemini", "copilot", "cohere"
      provider = "openai",

      -- Provider configurations
      providers = {
        claude = {
          endpoint = "https://api.anthropic.com",
          model = "claude-sonnet-4-5-20250929",
          timeout = 30000,
          extra_request_body = {
            temperature = 0.75,
            max_tokens = 20480,
          },
        },
        openai = {
          endpoint = "https://api.openai.com/v1",
          model = "gpt-4o-mini",
          timeout = 30000,
          extra_request_body = {
            temperature = 0.75,
            max_completion_tokens = 16384,
          },
        },
        azure = {
          endpoint = "",   -- e.g., "https://<resource>.openai.azure.com"
          deployment = "", -- Azure deployment name
          api_version = "2024-12-01-preview",
          timeout = 30000,
          extra_request_body = {
            temperature = 0.75,
            max_completion_tokens = 16384,
          },
        },
        gemini = {
          endpoint = "https://generativelanguage.googleapis.com/v1beta/models",
          model = "gemini-2.0-flash",
          timeout = 30000,
          extra_request_body = {
            generationConfig = {
              temperature = 0.75,
            },
          },
        },
        copilot = {
          endpoint = "https://api.githubcopilot.com",
          model = "gpt-4o-2024-08-06",
          timeout = 30000,
          extra_request_body = {
            temperature = 0.75,
            max_tokens = 20480,
          },
        },
        -- Custom provider example for Ollama (local models)
        -- Uncomment and configure if using local LLMs
        -- ollama = {
        --   __inherited_from = "openai",
        --   endpoint = "http://localhost:11434/v1",
        --   model = "llama3.2",
        --   api_key_name = "",
        -- },
      },

      -- Behavior settings
      behaviour = {
        auto_suggestions = false, -- Set true for copilot-like suggestions
        auto_set_highlight_group = true,
        auto_set_keymaps = true,
        auto_apply_diff_after_generation = false,
        support_paste_from_clipboard = false,
        minimize_diff = true,
        enable_token_counting = true,
      },

      -- Mappings
      mappings = {
        diff = {
          ours = "co",
          theirs = "ct",
          all_theirs = "ca",
          both = "cb",
          cursor = "cc",
          next = "]x",
          prev = "[x",
        },
        suggestion = {
          accept = "<M-l>",
          next = "<M-]>",
          prev = "<M-[>",
          dismiss = "<C-]>",
        },
        jump = {
          next = "]]",
          prev = "[[",
        },
        submit = {
          normal = "<CR>",
          insert = "<C-s>",
        },
        sidebar = {
          apply_all = "A",
          apply_cursor = "a",
          switch_windows = "<Tab>",
          reverse_switch_windows = "<S-Tab>",
        },
      },

      -- Hints shown in the UI
      hints = { enabled = true },

      -- Window configuration
      windows = {
        position = "right",
        wrap = true,
        width = 30,
        sidebar_header = {
          enabled = true,
          align = "center",
          rounded = true,
        },
        input = {
          prefix = "> ",
          height = 8,
        },
        edit = {
          border = "rounded",
          start_insert = true,
        },
        ask = {
          floating = false,
          start_insert = true,
          border = "rounded",
        },
      },

      -- Highlight groups
      highlights = {
        diff = {
          current = "DiffText",
          incoming = "DiffAdd",
        },
      },

      -- Diff settings
      diff = {
        autojump = true,
        list_opener = "copen",
        override_timeoutlen = 500,
      },
    },
  },
  -- {
  --   "zbirenbaum/copilot.lua",
  --   cmd = "Copilot",
  --   event = "InsertEnter",
  --   opts = {
  --     suggestion = {
  --       enabled = true,
  --       auto_trigger = true,
  --       keymap = {
  --         accept = "<C-l>",
  --         next = "<C-n>",
  --         prev = "<C-p>",
  --       },
  --     },
  --     panel = { enabled = false },
  --   },
  -- }
}