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;; -*- lexical-binding: t; -*-
(defvar servall-endpoint "localhost:5555")
(defvar servall-client-buffer-name "*servall-client*")
(defun servall-api-wikipedia-search (query)
(servall-url-fetch-json
(concat servall-endpoint "/wikipedia/search/" query)))
(defun servall-api-wikipedia-org (name)
(servall-url-fetch-json
(concat servall-endpoint "/wikipedia/org/" name)))
(defun servall-parse-http-header (text)
(let ((status) (fields))
(with-temp-buffer
(insert text)
(goto-char (point-min))
(re-search-forward "^HTTP.*\\([0-9]\\{3\\}\\).*$")
(setq status (match-string 1))
(while (re-search-forward "^\\(.*?\\): \\(.*\\)$" nil t)
(push (cons (intern (match-string 1)) (match-string 2)) fields)))
(list (cons 'status status) (cons 'fields fields))))
(defun servall-url-fetch-json (url &optional decompression with-header)
(with-current-buffer (get-buffer-create servall-client-buffer-name)
(goto-char (point-max))
(insert "[" (current-time-string) "] Request: " url "\n"))
(with-current-buffer (url-retrieve-synchronously url t)
(let ((header) (status) (fields) (json))
(delete-http-header)
(setq header (servall-parse-http-header (car kill-ring))
status (alist-get 'status header)
fields (alist-get 'fields header))
(with-current-buffer servall-client-buffer-name
(insert "[" (current-time-string) "] Response: " status "\n"))
(when decompression
(call-process-region (point) (point-max) "gunzip" t t t)
(goto-char (point-min)))
(call-interactively 'delete-trailing-whitespace)
(if (string= status "200")
(unless (= (point) (point-max))
(setq json (json-read-from-string
(decode-coding-string
(buffer-string) 'utf-8)))
(if with-header
(list
(cons 'header fields)
(cons 'json json))
json))
(error "HTTP error: %s" (buffer-substring (point) (point-max)))))))
(provide 'servall-client)
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