From aaae362ae8bbd9d284f28594359dda6fe5c8997e Mon Sep 17 00:00:00 2001
From: simrat39 <simrats169169@gmail.com>
Date: Sat, 24 Apr 2021 14:51:28 -0700
Subject: [PATCH] feat: Add code actions support

Uses the default handler, mapped to 'a'
---
 lua/symbols-outline.lua             |  4 ++++
 lua/symbols-outline/code_action.lua | 31 +++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 lua/symbols-outline/code_action.lua

diff --git a/lua/symbols-outline.lua b/lua/symbols-outline.lua
index d53f772..7ec9fa2 100644
--- a/lua/symbols-outline.lua
+++ b/lua/symbols-outline.lua
@@ -143,6 +143,10 @@ local function setup_keymaps(bufnr)
     vim.api.nvim_buf_set_keymap(bufnr, "n", "r",
                                 ":lua require('symbols-outline.rename').rename()<Cr>",
                                 {})
+    -- code actions
+    vim.api.nvim_buf_set_keymap(bufnr, "n", "a",
+                                ":lua require('symbols-outline.code_action').show_code_actions()<Cr>",
+                                {})
     -- close outline when escape is pressed
     vim.api.nvim_buf_set_keymap(bufnr, "n", "<Esc>", ":bw!<Cr>",{})
 end
diff --git a/lua/symbols-outline/code_action.lua b/lua/symbols-outline/code_action.lua
new file mode 100644
index 0000000..0b852c6
--- /dev/null
+++ b/lua/symbols-outline/code_action.lua
@@ -0,0 +1,31 @@
+local vim = vim
+
+local main = require('symbols-outline')
+
+local M = {}
+
+local function get_action_params(node, winnr)
+    local bufnr = vim.api.nvim_win_get_buf(winnr)
+    local fn = "file://" .. vim.api.nvim_buf_get_name(bufnr)
+
+    local pos = {line = node.line, character = node.character}
+    local diagnostics = vim.lsp.diagnostic.get_line_diagnostics(bufnr, node.line)
+    return {
+        textDocument = {uri = fn},
+        range = {start = pos, ["end"] = pos},
+        context = {diagnostics = diagnostics},
+        bufnr = bufnr
+    }
+end
+
+function M.show_code_actions()
+    local current_line = vim.api.nvim_win_get_cursor(main.state.outline_win)[1]
+    local node = main.state.flattened_outline_items[current_line]
+
+    local params = get_action_params(node, main.state.code_win)
+
+    vim.lsp.buf_request(params.bufnr, "textDocument/codeAction", params,
+                        vim.lsp.handlers["textDocument/codeAction"])
+end
+
+return M