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-rw-r--r--guix-data-service/web/controller.scm96
-rw-r--r--guix-data-service/web/render.scm127
-rw-r--r--guix-data-service/web/server.scm45
-rw-r--r--guix-data-service/web/sxml.scm371
-rw-r--r--guix-data-service/web/util.scm45
-rw-r--r--guix-data-service/web/view/html.scm246
6 files changed, 930 insertions, 0 deletions
diff --git a/guix-data-service/web/controller.scm b/guix-data-service/web/controller.scm
new file mode 100644
index 0000000..1d7bd72
--- /dev/null
+++ b/guix-data-service/web/controller.scm
@@ -0,0 +1,96 @@
+;;; Guix Data Service -- Information about Guix over time
+;;; Copyright © 2016, 2017, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
+;;;
+;;; This program is free software: you can redistribute it and/or
+;;; modify it under the terms of the GNU Affero General Public License
+;;; as published by the Free Software Foundation, either version 3 of
+;;; the License, or (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;; Affero General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Affero General Public
+;;; License along with this program. If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+(define-module (guix-data-service web controller)
+ #:use-module (ice-9 match)
+ #:use-module (ice-9 pretty-print)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-11)
+ #:use-module (srfi srfi-26)
+ #:use-module (web request)
+ #:use-module (web uri)
+ #:use-module (squee)
+ #:use-module (guix-data-service comparison)
+ #:use-module (guix-data-service model guix-revision)
+ #:use-module (guix-data-service web render)
+ #:use-module (guix-data-service web util)
+ #:use-module (guix-data-service web view html)
+ #:export (controller))
+
+(define-syntax-rule (-> target functions ...)
+ (fold (lambda (f val) (and=> val f))
+ target
+ (list functions ...)))
+
+(define (render-with-error-handling page message)
+ (apply render-html (page))
+ ;; (catch #t
+ ;; (lambda ()
+ ;; (receive (sxml headers)
+ ;; (pretty-print (page))
+ ;; (render-html sxml headers)))
+ ;; (lambda (key . args)
+ ;; (format #t "ERROR: ~a ~a\n"
+ ;; key args)
+ ;; (render-html (error-page message))))
+ )
+
+(define (controller request body)
+ (define conn (connect-to-postgres-paramstring "dbname=guix_data_service"))
+
+ (match-lambda
+ ((GET)
+ (apply render-html (index (most-recent-n-guix-revisions conn 10))))
+ ((GET "compare")
+ (let ((base-commit (-> request
+ request-uri
+ uri-query
+ parse-query-string
+ (cut assoc-ref <> "base_commit")))
+ (target-commit (-> request
+ request-uri
+ uri-query
+ parse-query-string
+ (cut assoc-ref <> "target_commit"))))
+ (let-values
+ (((base-packages-vhash target-packages-vhash)
+ (package-data->package-data-vhashes
+ (package-differences-data conn
+ (commit->revision-id conn base-commit)
+ (commit->revision-id conn target-commit)))))
+ (let* ((new-packages
+ (package-data-vhashes->new-packages base-packages-vhash
+ target-packages-vhash))
+ (removed-packages
+ (package-data-vhashes->removed-packages base-packages-vhash
+ target-packages-vhash))
+ (version-changes
+ (package-data-version-changes base-packages-vhash
+ target-packages-vhash))
+ (other-changes
+ (package-data-other-changes base-packages-vhash
+ target-packages-vhash)))
+ (apply render-html
+ (compare base-commit
+ target-commit
+ new-packages
+ removed-packages
+ version-changes
+ other-changes))))))
+ ((GET path ...)
+ (render-static-asset request))))
diff --git a/guix-data-service/web/render.scm b/guix-data-service/web/render.scm
new file mode 100644
index 0000000..94cbf55
--- /dev/null
+++ b/guix-data-service/web/render.scm
@@ -0,0 +1,127 @@
+;;; Guix Data Service -- Information about Guix over time
+;;; Copyright © 2016, 2017 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2014 David Thompson <davet@gnu.org>
+;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
+;;;
+;;; This program is free software: you can redistribute it and/or
+;;; modify it under the terms of the GNU Affero General Public License
+;;; as published by the Free Software Foundation, either version 3 of
+;;; the License, or (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;; Affero General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Affero General Public
+;;; License along with this program. If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+;; This code was snarfed from David Thompson's guix-web.
+
+(define-module (guix-data-service web render)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-19)
+ #:use-module (srfi srfi-26)
+ #:use-module (ice-9 binary-ports)
+ #:use-module (web request)
+ #:use-module (web response)
+ #:use-module (web uri)
+ #:use-module (json)
+ #:use-module (guix-data-service config)
+ #:use-module (guix-data-service web sxml)
+ #:use-module (guix-data-service web util)
+ #:export (render-static-asset
+ render-html
+ render-json
+ not-found
+ unprocessable-entity
+ created
+ redirect))
+
+(define file-mime-types
+ '(("css" . (text/css))
+ ("js" . (text/javascript))
+ ("svg" . (image/svg+xml))
+ ("png" . (image/png))
+ ("gif" . (image/gif))
+ ("woff" . (application/font-woff))
+ ("ttf" . (application/octet-stream))
+ ("html" . (text/html))))
+
+(define (render-static-asset request)
+ (render-static-file (%config 'assets-dir) request))
+
+(define %not-slash
+ (char-set-complement (char-set #\/)))
+
+(define (render-static-file root request)
+ (define path
+ (uri-path (request-uri request)))
+
+ (define failure
+ (not-found (build-uri 'http
+ #:host (%config 'host)
+ #:port (%config 'port)
+ #:path path)))
+
+ (let ((file-name (string-append root "/" path)))
+ (if (not (any (cut string-contains <> "..")
+ (string-tokenize path %not-slash)))
+ (let* ((stat (stat file-name #f))
+ (modified (and stat
+ (make-time time-utc 0 (stat:mtime stat)))))
+ (define (send-file)
+ (list `((content-type
+ . ,(assoc-ref file-mime-types
+ (file-extension file-name)))
+ (last-modified . ,(time-utc->date modified)))
+ (call-with-input-file file-name get-bytevector-all)))
+
+ (if (and stat (not (eq? 'directory (stat:type stat))))
+ (cond ((assoc-ref (request-headers request) 'if-modified-since)
+ =>
+ (lambda (client-date)
+ (if (time>? modified (date->time-utc client-date))
+ (send-file)
+ (list (build-response #:code 304) ;"Not Modified"
+ #f))))
+ (else
+ (send-file)))
+ failure))
+ failure)))
+
+(define* (render-html #:key sxml (extra-headers '()))
+ (list (append extra-headers
+ '((content-type . (text/html))))
+ (lambda (port)
+ (sxml->html sxml port))))
+
+(define (render-json json)
+ (list '((content-type . (application/json)))
+ (lambda (port)
+ (scm->json json port))))
+
+(define (not-found uri)
+ (list (build-response #:code 404)
+ (string-append "Resource not found: " (uri->string uri))))
+
+(define (unprocessable-entity)
+ (list (build-response #:code 422)
+ ""))
+
+(define (created)
+ (list (build-response #:code 201)
+ ""))
+
+(define (redirect path)
+ (let ((uri (build-uri 'http
+ #:host (%config 'host)
+ #:port (%config 'port)
+ #:path (string-append
+ "/" (encode-and-join-uri-path path)))))
+ (list (build-response
+ #:code 301
+ #:headers `((content-type . (text/html))
+ (location . ,uri)))
+ (format #f "Redirect to ~a" (uri->string uri)))))
diff --git a/guix-data-service/web/server.scm b/guix-data-service/web/server.scm
new file mode 100644
index 0000000..2077629
--- /dev/null
+++ b/guix-data-service/web/server.scm
@@ -0,0 +1,45 @@
+;;; Guix Data Service -- Information about Guix over time
+;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
+;;;
+;;; This program is free software: you can redistribute it and/or
+;;; modify it under the terms of the GNU Affero General Public License
+;;; as published by the Free Software Foundation, either version 3 of
+;;; the License, or (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;; Affero General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Affero General Public
+;;; License along with this program. If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+(define-module (guix-data-service web server)
+ #:use-module (srfi srfi-1)
+ #:use-module (web http)
+ #:use-module (web request)
+ #:use-module (web uri)
+ #:use-module (fibers web server)
+ #:use-module (guix-data-service web controller)
+ #:use-module (guix-data-service web util)
+ #:export (start-guix-data-service-web-server))
+
+(define (run-controller controller request body)
+ ((controller request body)
+ (cons (request-method request)
+ (request-path-components request))))
+
+(define (handler request body controller)
+ (format #t "~a ~a\n"
+ (request-method request)
+ (uri-path (request-uri request)))
+ (apply values
+ (run-controller controller request body)))
+
+(define (start-guix-data-service-web-server port)
+ (run-server (lambda (request body)
+ (handler request body controller))
+ #:addr INADDR_ANY
+ #:port port))
diff --git a/guix-data-service/web/sxml.scm b/guix-data-service/web/sxml.scm
new file mode 100644
index 0000000..468b81f
--- /dev/null
+++ b/guix-data-service/web/sxml.scm
@@ -0,0 +1,371 @@
+;;; Guix Data Service -- Information about Guix over time
+;;; Copyright © 2016, 2017 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2015 David Thompson <davet@gnu.org>
+;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
+;;;
+;;; This program is free software: you can redistribute it and/or
+;;; modify it under the terms of the GNU Affero General Public License
+;;; as published by the Free Software Foundation, either version 3 of
+;;; the License, or (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;; Affero General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Affero General Public
+;;; License along with this program. If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; SXML to HTML conversion.
+;;
+;;; Code:
+
+(define-module (guix-data-service web sxml)
+ #:use-module (sxml simple)
+ #:use-module (srfi srfi-26)
+ #:use-module (ice-9 match)
+ #:use-module (ice-9 format)
+ #:use-module (ice-9 hash-table)
+ #:export (sxml->html))
+
+(define %self-closing-tags
+ '(area
+ base
+ br
+ col
+ command
+ embed
+ hr
+ img
+ input
+ keygen
+ link
+ meta
+ param
+ source
+ track
+ wbr))
+
+(define (self-closing-tag? tag)
+ "Return #t if TAG is self-closing."
+ (pair? (memq tag %self-closing-tags)))
+
+(define %escape-chars
+ (alist->hash-table
+ '((#\" . "quot")
+ (#\& . "amp")
+ (#\' . "apos")
+ (#\< . "lt")
+ (#\> . "gt")
+ (#\¡ . "iexcl")
+ (#\¢ . "cent")
+ (#\£ . "pound")
+ (#\¤ . "curren")
+ (#\¥ . "yen")
+ (#\¦ . "brvbar")
+ (#\§ . "sect")
+ (#\¨ . "uml")
+ (#\© . "copy")
+ (#\ª . "ordf")
+ (#\« . "laquo")
+ (#\¬ . "not")
+ (#\® . "reg")
+ (#\¯ . "macr")
+ (#\° . "deg")
+ (#\± . "plusmn")
+ (#\² . "sup2")
+ (#\³ . "sup3")
+ (#\´ . "acute")
+ (#\µ . "micro")
+ (#\¶ . "para")
+ (#\· . "middot")
+ (#\¸ . "cedil")
+ (#\¹ . "sup1")
+ (#\º . "ordm")
+ (#\» . "raquo")
+ (#\¼ . "frac14")
+ (#\½ . "frac12")
+ (#\¾ . "frac34")
+ (#\¿ . "iquest")
+ (#\À . "Agrave")
+ (#\Á . "Aacute")
+ (#\Â . "Acirc")
+ (#\Ã . "Atilde")
+ (#\Ä . "Auml")
+ (#\Å . "Aring")
+ (#\Æ . "AElig")
+ (#\Ç . "Ccedil")
+ (#\È . "Egrave")
+ (#\É . "Eacute")
+ (#\Ê . "Ecirc")
+ (#\Ë . "Euml")
+ (#\Ì . "Igrave")
+ (#\Í . "Iacute")
+ (#\Î . "Icirc")
+ (#\Ï . "Iuml")
+ (#\Ð . "ETH")
+ (#\Ñ . "Ntilde")
+ (#\Ò . "Ograve")
+ (#\Ó . "Oacute")
+ (#\Ô . "Ocirc")
+ (#\Õ . "Otilde")
+ (#\Ö . "Ouml")
+ (#\× . "times")
+ (#\Ø . "Oslash")
+ (#\Ù . "Ugrave")
+ (#\Ú . "Uacute")
+ (#\Û . "Ucirc")
+ (#\Ü . "Uuml")
+ (#\Ý . "Yacute")
+ (#\Þ . "THORN")
+ (#\ß . "szlig")
+ (#\à . "agrave")
+ (#\á . "aacute")
+ (#\â . "acirc")
+ (#\ã . "atilde")
+ (#\ä . "auml")
+ (#\å . "aring")
+ (#\æ . "aelig")
+ (#\ç . "ccedil")
+ (#\è . "egrave")
+ (#\é . "eacute")
+ (#\ê . "ecirc")
+ (#\ë . "euml")
+ (#\ì . "igrave")
+ (#\í . "iacute")
+ (#\î . "icirc")
+ (#\ï . "iuml")
+ (#\ð . "eth")
+ (#\ñ . "ntilde")
+ (#\ò . "ograve")
+ (#\ó . "oacute")
+ (#\ô . "ocirc")
+ (#\õ . "otilde")
+ (#\ö . "ouml")
+ (#\÷ . "divide")
+ (#\ø . "oslash")
+ (#\ù . "ugrave")
+ (#\ú . "uacute")
+ (#\û . "ucirc")
+ (#\ü . "uuml")
+ (#\ý . "yacute")
+ (#\þ . "thorn")
+ (#\ÿ . "yuml")
+ (#\Œ . "OElig")
+ (#\œ . "oelig")
+ (#\Š . "Scaron")
+ (#\š . "scaron")
+ (#\Ÿ . "Yuml")
+ (#\ƒ . "fnof")
+ (#\ˆ . "circ")
+ (#\˜ . "tilde")
+ (#\Α . "Alpha")
+ (#\Β . "Beta")
+ (#\Γ . "Gamma")
+ (#\Δ . "Delta")
+ (#\Ε . "Epsilon")
+ (#\Ζ . "Zeta")
+ (#\Η . "Eta")
+ (#\Θ . "Theta")
+ (#\Ι . "Iota")
+ (#\Κ . "Kappa")
+ (#\Λ . "Lambda")
+ (#\Μ . "Mu")
+ (#\Ν . "Nu")
+ (#\Ξ . "Xi")
+ (#\Ο . "Omicron")
+ (#\Π . "Pi")
+ (#\Ρ . "Rho")
+ (#\Σ . "Sigma")
+ (#\Τ . "Tau")
+ (#\Υ . "Upsilon")
+ (#\Φ . "Phi")
+ (#\Χ . "Chi")
+ (#\Ψ . "Psi")
+ (#\Ω . "Omega")
+ (#\α . "alpha")
+ (#\β . "beta")
+ (#\γ . "gamma")
+ (#\δ . "delta")
+ (#\ε . "epsilon")
+ (#\ζ . "zeta")
+ (#\η . "eta")
+ (#\θ . "theta")
+ (#\ι . "iota")
+ (#\κ . "kappa")
+ (#\λ . "lambda")
+ (#\μ . "mu")
+ (#\ν . "nu")
+ (#\ξ . "xi")
+ (#\ο . "omicron")
+ (#\π . "pi")
+ (#\ρ . "rho")
+ (#\ς . "sigmaf")
+ (#\σ . "sigma")
+ (#\τ . "tau")
+ (#\υ . "upsilon")
+ (#\φ . "phi")
+ (#\χ . "chi")
+ (#\ψ . "psi")
+ (#\ω . "omega")
+ (#\ϑ . "thetasym")
+ (#\ϒ . "upsih")
+ (#\ϖ . "piv")
+ (#\  . "ensp")
+ (#\  . "emsp")
+ (#\  . "thinsp")
+ (#\– . "ndash")
+ (#\— . "mdash")
+ (#\‘ . "lsquo")
+ (#\’ . "rsquo")
+ (#\‚ . "sbquo")
+ (#\“ . "ldquo")
+ (#\” . "rdquo")
+ (#\„ . "bdquo")
+ (#\† . "dagger")
+ (#\‡ . "Dagger")
+ (#\• . "bull")
+ (#\… . "hellip")
+ (#\‰ . "permil")
+ (#\′ . "prime")
+ (#\″ . "Prime")
+ (#\‹ . "lsaquo")
+ (#\› . "rsaquo")
+ (#\‾ . "oline")
+ (#\⁄ . "frasl")
+ (#\€ . "euro")
+ (#\ℑ . "image")
+ (#\℘ . "weierp")
+ (#\ℜ . "real")
+ (#\™ . "trade")
+ (#\ℵ . "alefsym")
+ (#\← . "larr")
+ (#\↑ . "uarr")
+ (#\→ . "rarr")
+ (#\↓ . "darr")
+ (#\↔ . "harr")
+ (#\↵ . "crarr")
+ (#\⇐ . "lArr")
+ (#\⇑ . "uArr")
+ (#\⇒ . "rArr")
+ (#\⇓ . "dArr")
+ (#\⇔ . "hArr")
+ (#\∀ . "forall")
+ (#\∂ . "part")
+ (#\∃ . "exist")
+ (#\∅ . "empty")
+ (#\∇ . "nabla")
+ (#\∈ . "isin")
+ (#\∉ . "notin")
+ (#\∋ . "ni")
+ (#\∏ . "prod")
+ (#\∑ . "sum")
+ (#\− . "minus")
+ (#\∗ . "lowast")
+ (#\√ . "radic")
+ (#\∝ . "prop")
+ (#\∞ . "infin")
+ (#\∠ . "ang")
+ (#\∧ . "and")
+ (#\∨ . "or")
+ (#\∩ . "cap")
+ (#\∪ . "cup")
+ (#\∫ . "int")
+ (#\∴ . "there4")
+ (#\∼ . "sim")
+ (#\≅ . "cong")
+ (#\≈ . "asymp")
+ (#\≠ . "ne")
+ (#\≡ . "equiv")
+ (#\≤ . "le")
+ (#\≥ . "ge")
+ (#\⊂ . "sub")
+ (#\⊃ . "sup")
+ (#\⊄ . "nsub")
+ (#\⊆ . "sube")
+ (#\⊇ . "supe")
+ (#\⊕ . "oplus")
+ (#\⊗ . "otimes")
+ (#\⊥ . "perp")
+ (#\⋅ . "sdot")
+ (#\⋮ . "vellip")
+ (#\⌈ . "lceil")
+ (#\⌉ . "rceil")
+ (#\⌊ . "lfloor")
+ (#\⌋ . "rfloor")
+ (#\〈 . "lang")
+ (#\〉 . "rang")
+ (#\◊ . "loz")
+ (#\♠ . "spades")
+ (#\♣ . "clubs")
+ (#\♥ . "hearts")
+ (#\♦ . "diams"))))
+
+(define (string->escaped-html s port)
+ "Write the HTML escaped form of S to PORT."
+ (define (escape c)
+ (let ((escaped (hash-ref %escape-chars c)))
+ (if escaped
+ (format port "&~a;" escaped)
+ (display c port))))
+ (string-for-each escape s))
+
+(define (object->escaped-html obj port)
+ "Write the HTML escaped form of OBJ to PORT."
+ (string->escaped-html
+ (call-with-output-string (cut display obj <>))
+ port))
+
+(define (attribute-value->html value port)
+ "Write the HTML escaped form of VALUE to PORT."
+ (if (string? value)
+ (string->escaped-html value port)
+ (object->escaped-html value port)))
+
+(define (attribute->html attr value port)
+ "Write ATTR and VALUE to PORT."
+ (format port "~a=\"" attr)
+ (attribute-value->html value port)
+ (display #\" port))
+
+(define (element->html tag attrs body port)
+ "Write the HTML TAG to PORT, where TAG has the attributes in the
+list ATTRS and the child nodes in BODY."
+ (format port "<~a" tag)
+ (for-each (match-lambda
+ ((attr value)
+ (display #\space port)
+ (attribute->html attr value port)))
+ attrs)
+ (if (and (null? body) (self-closing-tag? tag))
+ (display " />" port)
+ (begin
+ (display #\> port)
+ (for-each (cut sxml->html <> port) body)
+ (format port "</~a>" tag))))
+
+(define (doctype->html doctype port)
+ (format port "<!DOCTYPE ~a>" doctype))
+
+(define* (sxml->html tree #:optional (port (current-output-port)))
+ "Write the serialized HTML form of TREE to PORT."
+ (match tree
+ (() *unspecified*)
+ (('doctype type)
+ (doctype->html type port))
+ ;; Unescaped, raw HTML output
+ (('raw html)
+ (display html port))
+ (((? symbol? tag) ('@ attrs ...) body ...)
+ (element->html tag attrs body port))
+ (((? symbol? tag) body ...)
+ (element->html tag '() body port))
+ ((nodes ...)
+ (for-each (cut sxml->html <> port) nodes))
+ ((? string? text)
+ (string->escaped-html text port))
+ ;; Render arbitrary Scheme objects, too.
+ (obj (object->escaped-html obj port))))
diff --git a/guix-data-service/web/util.scm b/guix-data-service/web/util.scm
new file mode 100644
index 0000000..1938890
--- /dev/null
+++ b/guix-data-service/web/util.scm
@@ -0,0 +1,45 @@
+;;; Guix Data Service -- Information about Guix over time
+;;; Copyright © 2016, 2017 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2014 David Thompson <davet@gnu.org>
+;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
+;;;
+;;; This program is free software: you can redistribute it and/or
+;;; modify it under the terms of the GNU Affero General Public License
+;;; as published by the Free Software Foundation, either version 3 of
+;;; the License, or (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;; Affero General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Affero General Public
+;;; License along with this program. If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+(define-module (guix-data-service web util)
+ #:use-module (ice-9 match)
+ #:use-module (srfi srfi-1)
+ #:use-module (web request)
+ #:use-module (web uri)
+ #:export (parse-query-string
+ request-path-components
+ file-extension
+ directory?))
+
+(define (parse-query-string query)
+ "Parse and decode the URI query string QUERY and return an alist."
+ (let lp ((lst (map uri-decode (string-split query (char-set #\& #\=)))))
+ (match lst
+ ((key value . rest)
+ (cons (cons key value) (lp rest)))
+ (() '()))))
+
+(define (request-path-components request)
+ (split-and-decode-uri-path (uri-path (request-uri request))))
+
+(define (file-extension file-name)
+ (last (string-split file-name #\.)))
+
+(define (directory? filename)
+ (string=? filename (dirname filename)))
diff --git a/guix-data-service/web/view/html.scm b/guix-data-service/web/view/html.scm
new file mode 100644
index 0000000..9699ef6
--- /dev/null
+++ b/guix-data-service/web/view/html.scm
@@ -0,0 +1,246 @@
+;;; Guix Data Service -- Information about Guix over time
+;;; Copyright © 2016, 2017, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2018, 2019 Arun Isaac <arunisaac@systemreboot.net>
+;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
+;;;
+;;; This program is free software: you can redistribute it and/or
+;;; modify it under the terms of the GNU Affero General Public License
+;;; as published by the Free Software Foundation, either version 3 of
+;;; the License, or (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;; Affero General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Affero General Public
+;;; License along with this program. If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+(define-module (guix-data-service web view html)
+ #:use-module (guix-data-service config)
+ #:use-module (ice-9 match)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-19)
+ #:export (index
+ compare
+ unknown
+ error-page))
+
+(define* (header)
+ `(nav
+ (@ (id "header") (class "navbar navbar-default"))
+ (div
+ (@ (class "container-fluid"))
+ (div
+ (@ (class "navbar-header"))
+ (div (@ (class "navbar-brand"))
+ (a (@ (href "/") (class "logo"))))))))
+
+(define* (layout #:key
+ (head '())
+ (body '())
+ (title "Guix Data Service")
+ (extra-headers '()))
+ `(#:sxml ((doctype "html")
+ (html
+ (head
+ (title ,title)
+ (meta (@ (http-equiv "Content-Type")
+ (content "text/html; charset=UTF-8")))
+ (meta (@ (http-equiv "Content-Language") (content "en")))
+ (meta (@ (name "author") (content "Christopher Baines")))
+ (meta (@ (name "viewport")
+ (content "width=device-width, initial-scale=1")))
+ (link
+ (@ (rel "stylesheet")
+ (media "screen")
+ (type "text/css")
+ (href "/css/reset.css")))
+ (link
+ (@ (rel "stylesheet")
+ (media "screen")
+ (type "text/css")
+ (href "/css/bootstrap.css")))
+ ,@head
+ (link
+ (@ (rel "stylesheet")
+ (media "screen")
+ (type "text/css")
+ (href "/css/screen.css"))))
+ (body ,@body
+ (footer
+ (p "Copyright © 2016—2019 by the GNU Guix community."
+ (br)
+ "Now with even more " (span (@ (class "lambda")) "λ") "! ")
+ (p "This is free software. Download the "
+ (a (@ (href "https://git.cbaines.net/guix/data-service/"))
+ "source code here") ".")))))
+ #:extra-headers ,extra-headers))
+
+(define (index guix-revisions)
+ (layout
+ #:extra-headers
+ '((cache-control . ((max-age . 60))))
+ #:body
+ `(,(header)
+ (div
+ (@ (class "container"))
+ (h1 "Guix Data Service")
+ (form (@ (id "compare")
+ (action "/compare"))
+ (div
+ (@ (class "form-group"))
+ (label (@ (for "base_commit"))
+ "Base commit")
+ (input (@ (type "text")
+ (class "form-control")
+ (id "base_commit")
+ (name "base_commit")
+ (placeholder "base commit"))))
+ (div
+ (@ (class "form-group"))
+ (label (@ (for "target_commit"))
+ "Target commit")
+ (input (@ (type "text")
+ (class "form-control")
+ (id "target_commit")
+ (name "target_commit")
+ (placeholder "target commit"))))
+ (button
+ (@ (type "submit")
+ (class "btn btn-lg btn-primary"))
+ "Compare"))
+ (h3 "Recent fetched revisions")
+ ,(if (null? guix-revisions)
+ '(p "No revisions")
+ `(table
+ (@ (class "table"))
+ (thead
+ (tr
+ (th (@ (class "col-md-6")) "Source Repository URL")
+ (th (@ (class "col-md-6")) "Commit")))
+ (tbody
+ ,@(map
+ (match-lambda
+ ((id url commit store_path)
+ `(tr
+ (td ,url)
+ (td (samp ,commit)))))
+ guix-revisions))))))))
+
+(define (compare base-commit
+ target-commit
+ new-packages
+ removed-packages
+ version-changes
+ other-changes)
+ (layout
+ #:extra-headers
+ '((cache-control . ((max-age . 60))))
+ #:body
+ `(,(header)
+ (div
+ (@ (class "container"))
+ (h1 "Comparing "
+ (samp ,(string-take base-commit 8) "…")
+ " and "
+ (samp ,(string-take target-commit 8) "…"))
+ (h3 "New packages")
+ ,(if (null? new-packages)
+ '(p "No new packages")
+ `(table
+ (@ (class "table"))
+ (thead
+ (tr
+ (th (@ (class "col-md-3")) "Name")
+ (th (@ (class "col-md-9")) "Version")))
+ (tbody
+ ,@(map
+ (match-lambda
+ ((name . version)
+ `(tr
+ (td ,name)
+ (td ,version))))
+ new-packages))))
+ (h3 "Removed packages")
+ ,(if (null? removed-packages)
+ '(p "No removed packages")
+ `(table
+ (@ (class "table"))
+ (thead
+ (tr
+ (th (@ (class "col-md-3")) "Name")
+ (th (@ (class "col-md-9")) "Version")))
+ (tbody
+ ,@(map
+ (match-lambda
+ ((name . version)
+ `(tr
+ (td ,name)
+ (td ,version))))
+ removed-packages))))
+ (h3 "Version changes")
+ ,(if (null? version-changes)
+ '(p "No version changes")
+ `(table
+ (@ (class "table"))
+ (thead
+ (tr
+ (th (@ (class "col-md-3")) "Name")
+ (th (@ (class "col-md-9")) "Versions")))
+ (tbody
+ ,@(map
+ (match-lambda
+ ((name . versions)
+ `(tr
+ (td ,name)
+ (td (ul
+ ,@(map (match-lambda
+ ((type . version)
+ `(li (@ (class ,(if (eq? type 'base)
+ "text-danger"
+ "text-success")))
+ ,version
+ ,(if (eq? type 'base)
+ " (old)"
+ " (new)"))))
+ versions))))))
+ version-changes))))
+ (h3 "Other changed packages")
+ ,@(if (null? other-changes)
+ '((p "No other changes"))
+ `((p "The metadata or derivation for these packages has changed.")
+ (table
+ (@ (class "table"))
+ (thead
+ (tr
+ (th (@ (class "col-md-3")) "Name")
+ (th (@ (class "col-md-9")) "Version")))
+ (tbody
+ ,@(map
+ (match-lambda
+ (((name . version) . (metadata-id derivation-id))
+ `(tr
+ (td ,name)
+ (td ,version))))
+ other-changes)))))))))
+
+(define (unknown id)
+ (layout
+ #:body
+ `(,(header)
+ (div (@ (class "container"))
+ (h1 "Patch not found")
+ (p "There is no submission with id " (strong ,id))
+ (p (a (@ (href "/")) "Try another one?"))))))
+
+(define (error-page message)
+ (layout
+ #:body
+ `(,(header)
+ (div (@ (class "container"))
+ (h1 "Error")
+ (p "An error occurred. Sorry about that!")
+ ,message
+ (p (a (@ (href "/")) "Try something else?"))))))