add cmp git issues

lua/user/cmp_gh_source.lua

@@ -0,0 +1,77 @@
+local plenary_status_ok, plenary = pcall(require, "plenary.job")
+if not plenary_status_ok then
+	return
+end
+
+local source = {}
+
+local enabled = true
+
+source.new = function()
+	local self = setmetatable({ cache = {} }, { __index = source })
+
+	return self
+end
+
+source.complete = function(self, _, callback)
+	if not enabled then
+		return
+	end
+
+	local bufnr = vim.api.nvim_get_current_buf()
+
+	-- This just makes sure that we only hit the GH API once per session.
+	--
+	-- You could remove this if you wanted, but this just makes it so we're
+	-- good programming citizens.
+	if not self.cache[bufnr] then
+		plenary
+			:new({
+				-- Uses `gh` executable to request the issues from the remote repository.
+				"gh",
+				"issue",
+				"list",
+				"--limit",
+				"1000",
+				"--json",
+				"title,number,body",
+				on_exit = function(job)
+					local result = job:result()
+					local parser_status_ok, parsed = pcall(vim.json.decode, table.concat(result, ""))
+					if not parser_status_ok then
+						enabled = false
+						return
+					end
+
+					local items = {}
+					for _, gh_item in ipairs(parsed) do
+						gh_item.body = string.gsub(gh_item.body or "", "\r", "")
+
+						table.insert(items, {
+							label = string.format("#%s", gh_item.number),
+							documentation = {
+								kind = "markdown",
+								value = string.format("# %s\n\n%s", gh_item.title, gh_item.body),
+							},
+						})
+					end
+
+					callback({ items = items, isIncomplete = false })
+					self.cache[bufnr] = items
+				end,
+			})
+			:start()
+	else
+		callback({ items = self.cache[bufnr], isIncomplete = false })
+	end
+end
+
+source.get_trigger_characters = function()
+	return { "#" }
+end
+
+source.is_available = function()
+	return vim.bo.filetype == "gitcommit"
+end
+
+require("cmp").register_source("gh_issues", source.new())