fix(statistics): change statistics option to list

rest.nvim will be still compatible with Map style statistics until
v4.0.0 release

lua/rest-nvim/client/curl/cli.lua

@@ -247,14 +247,12 @@ function builder.statistics()
     if vim.tbl_isempty(config.clients.curl.statistics) then
         return
     end
-    local args = { "-w" }
     local format = vim.iter(config.clients.curl.statistics)
-        :map(function(key, _style)
-            return ("? %s:%%{%s}\n"):format(key, key)
+        :map(function(style)
+            return ("? %s:%%{%s}\n"):format(style.id, style.id)
         end)
         :join("")
-    table.insert(args, "%{stderr}" .. format)
-    return args
+    return { "-w", "%{stderr}" .. format }
 end
 
 ---@package

lua/rest-nvim/config/check.lua

@@ -17,11 +17,29 @@ local function validate(tbl)
     return ok or false, "Invalid config" .. (err and ": " .. err or "")
 end
 
+---@param cfg rest.Config
+local function compat_deprecated(cfg)
+    local curl_statistics = cfg.clients.curl.statistics
+    if not vim.islist(curl_statistics) then
+        vim.deprecate("Map style `clients.curl.statistics` option", "List with `id` field", "4.0.0", "rest.nvim", false)
+        local new_statistics = vim.iter(curl_statistics):map(function (id, style)
+            style.id = id
+            return style
+        end):totable()
+        table.sort(new_statistics, function (a, b)
+            return a.id < b.id
+        end)
+        ---@diagnostic disable-next-line: inject-field
+        cfg.clients.curl.statistics = new_statistics
+    end
+end
+
 ---Validates the configuration
 ---@param cfg rest.Config
 ---@return boolean is_valid
 ---@return string|nil error_message
 function check.validate(cfg)
+    compat_deprecated(cfg)
     local ok, err = validate({
         custom_dynamic_variables = { cfg.custom_dynamic_variables, "table" },
         request = { cfg.request, "table" },

lua/rest-nvim/config/default.lua

@@ -36,10 +36,10 @@ local default_config = {
         curl = {
             ---Statistics to be shown, takes cURL's `--write-out` flag variables
             ---See `man curl` for `--write-out` flag
-            ---@type table<string,RestStatisticsStyle>
+            ---@type RestStatisticsStyle[]
             statistics = {
-                time_total = { winbar = "take", title = "Time taken", order = 1 },
-                size_download = { winbar = "size", title = "Download size", order = 2 },
+                { id = "time_total", winbar = "take", title = "Time taken" },
+                { id = "size_download", winbar = "size", title = "Download size" },
             },
         },
     },

lua/rest-nvim/config/init.lua

@@ -61,18 +61,17 @@ local config
 
 ---@class rest.Opts.Clients.Curl
 --- Statistics to parse from curl request output
---- Key is a string value of format used in `--write-out` option
---- See `man curl` for more info
----@field statistics? table<string,RestStatisticsStyle>
+---@field statistics? RestStatisticsStyle[]
 
 ---@class RestStatisticsStyle
+--- Identifier used used in curl's `--write-out` option
+--- See `man curl` for more info
+---@field id string
 --- Title used on Statistics pane
 ---@field title? string
 --- Winbar title. Set to `false` or `nil` to not show for winbar, set to empty string
 --- to hide title If true, rest.nvim will use lowered `title` field
 ---@field winbar? string|boolean
---- Order position from low to high
----@field order? number
 
 ---@class rest.Opts.Cookies
 --- Enable the cookies support (Default: `true`)

lua/rest-nvim/ui/result.lua

@@ -161,23 +161,11 @@ local panes = {
                 set_lines(self.bufnr, { "No Statistics" })
                 return
             end
-            vim.bo[self.bufnr].syntax = "http_stat"
-
-            local ordered = {}
-            for key, value in pairs(data.response.statistics) do
-                local style = config.clients.curl.statistics[key] or {}
-                local title = style["title"] or key
-
-                table.insert(ordered, {
-                    order = style.order or 0,
-                    val = ("%s: %s"):format(title, value),
-                })
-            end
-            table.sort(ordered, function(a, b)
-                return a.order < b.order
-            end)
-            for _, v in ipairs(ordered) do
-                table.insert(lines, v.val)
+            syntax_highlight(self.bufnr, "http_stat")
+            for _, style in ipairs(config.clients.curl.statistics) do
+                local title = style.title or style.id
+                local value = data.response.statistics[style.id] or ""
+                table.insert(lines, ("%s: %s"):format(title, value))
             end
             set_lines(self.bufnr, lines)
         end,
@@ -193,33 +181,20 @@ winbar = winbar .. "%#RestText#Press %#Keyword#?%#RestText# for help%#Normal# "
 ---Winbar component showing response statistics
 ---@return string
 function ui.stat_winbar()
+    local content = ""
     if not data.response then
         return "Loading...%#Normal#"
     end
-    local ordered = {}
-    for stat_name, style in pairs(config.clients.curl.statistics) do
-        local stat_value = data.response.statistics[stat_name] or ""
+    for _, style in ipairs(config.clients.curl.statistics) do
         if style.winbar then
-            local title = type(style.winbar) == "string" and style.winbar or (style.title or stat_name):lower()
+            local title = type(style.winbar) == "string" and style.winbar or (style.title or style.id):lower()
             if title ~= "" then
                 title = title .. ": "
             end
-            table.insert(ordered, {
-                order = style.order or 0,
-                val = string.format("%%#RestText#%s%%#Normal#%s", title, stat_value),
-            })
+            local value = data.response.statistics[style.id] or ""
+            content = content .. "  %#RestText#" .. title .. "%#Normal#" .. value
         end
     end
-    if #ordered == 0 then
-        return ""
-    end
-    table.sort(ordered, function(a, b)
-        return a.order < b.order
-    end)
-    local content = ""
-    for _, v in ipairs(ordered) do
-        content = content .. " " .. v.val
-    end
     return content
 end