add api and test handlers, refactor config

1 files changed, 122 insertions, 0 deletions

diff --git a/src/guff/api-handler.cr b/src/guff/api-handler.cr
new file mode 100644
index 0000000..7928d3c
--- /dev/null
+++ b/src/guff/api-handler.cr
@@ -0,0 +1,122 @@
+require "./handler"
+
+module Guff
+  record APIContext,
+    context : HTTP::Server::Context,
+    model : Model
+
+  API = {
+    "posts": {
+      "get_posts": {
+        text: "Get posts matching query.",
+
+        args: {
+          "q": {
+            text:     "Search string.",
+            type:     :text,
+            required: false,
+            default:  "",
+          },
+
+          "page": {
+            text:     "Page number",
+            type:     :int,
+            required: false,
+            default:  "1",
+          },
+
+          "tags": {
+            text:     "Comma-separated list of tags (union)",
+            type:     :tags,
+            required: false,
+            default:  "1",
+          },
+
+          "sort": {
+            text:     "Sort order of results",
+            type:     :sort,
+            required: false,
+            default:  "date,desc",
+          },
+        },
+
+        method: ->(c : APIContext) {
+          "get_posts"
+        }
+      },
+    },
+  }
+
+  API_PATH_RE = %r{
+    ^/api
+
+    (?:
+      # method call
+      (?:
+        /
+        (?<namespace>[a-z0-9_-]+)
+        /
+        (?<method>[a-z0-9]+)
+      )
+
+      |
+
+      # index.html
+      /(?:index(?:\.html|)|)
+      
+      |
+
+      # implicit index (no trailing slash)
+    )
+
+    $
+  }mx
+
+  class APIHandler < Handler
+    def call(context : HTTP::Server::Context)
+      if md = (context.request.path || "").match(API_PATH_RE)
+        if md["namespace"]?
+          # method call
+          do_call(context, md["namespace"], md["method"])
+        else
+          # api index
+          do_docs(context)
+        end
+      else
+        call_next(context)
+      end
+    end
+
+    private def do_call(
+      context   : HTTP::Server::Context,
+      namespace : String,
+      method    : String
+    )
+      # method call
+# 
+#       fn = API[namespace][method][:method] as Proc(APIContext, String)
+#       context.response.puts fn.call(APIContext.new(context, @model))
+# 
+      page = HTMLPageView.new(
+        "TODO: API Call",
+        "<p>API Call: namespace = %s, call = %s</p>" % [
+          namespace,
+          method
+        ]
+      )
+
+      context.response.content_type = page.content_type
+      context.response.puts page
+    end
+
+    private def do_docs(context : HTTP::Server::Context)
+      page = HTMLPageView.new(
+        "API Documentation",
+        "<p>API Documentation</p>"
+      )
+
+      context.response.content_type = page.content_type
+      context.response.puts page
+    end
+  end
+end