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#lang racket
(provide index-page
new-measurement-page
new-target-page
fallback-page)
(require web-server/formlets
"formlets.rkt"
"models/nutrient.rkt"
"models/nutrient-measurement.rkt"
"models/nutrient-target.rkt")
(define (page-template title body-xexpr)
`(html
(head
(meta ([charset "utf-8"]))
(meta ([name "viewport"] [content "width=device-width, initial-scale=1"]))
(title ,title)
;; Bootstrap CSS
(link ([href "https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css"]
[rel "stylesheet"]
[integrity "sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH"]
[crossorigin "anonymous"])))
(body
,navbar
(div ([class "container"])
,@body-xexpr)
;; Bootstrap JS bundle
(script ([src "https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"]
[integrity "sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz"]
[crossorigin "anonymous"])))))
;; Page components
(define navbar
'(nav ([class "navbar"])
(div ([class "container-fluid"])
(a ([class "navbar-brand"] [href "/"]) "FAPG")
(button ([class "navbar-toggler"]
[type "button"]
[data-bs-toggle "collapse"]
[data-bs-target "#navbarNav"]
[aria-controls "navbarNav"]
[aria-expanded "false"]
[aria-label "Toggle navigation"])
(span ([class "navbar-toggler-icon"])))
(div ([class "collapse navbar-collapse"] [id "navbarNav"])
(ul ([class "navbar-nav"])
(li ([class "nav-item"])
(a ([class "nav-link active"]
[aria-current "page"]
[href "/"])
"Home"))
(li ([class "nav-item"])
(a ([class "nav-link"]
[href "/about"])
"About"))
(li ([class "nav-item"])
(a ([class "nav-link"]
[href "/contact"])
"Contact")))))))
;; Page helpers
(define (round n number)
(~r number #:precision n))
;; Pages
(define (index-page measurements)
(page-template
"Ferti"
`((h1 ([class "display-1 mb-3"]) "Ferti")
(a ([class "btn btn-primary mb-3"] [href "/target/new"]) "Créer une cible")
(table ([class "table"])
(tr (th "Nutriment")
(th ([class "text-end"]) "Dernier Relevé")
(th ([class "text-end"]) "Dernière Cible")
(th ([class "text-end"]) "Delta (%)"))
,@(for/list ([n (get-nutrients)])
(define latest-target (get-latest-nutrient-target-value n))
(define latest-measurement (get-latest-nutrient-measurement-value n))
(define delta-percentage (cond
[(false? latest-target)
#f]
[(zero? latest-target)
-100]
[(zero? latest-measurement)
100]
[(number? latest-target)
(* 100
(/ (- latest-target latest-measurement)
latest-measurement))]))
`(tr (td ,(nutrient-name n))
(td ([class "text-end"]) ,(if latest-measurement (round 2 latest-measurement) "—"))
(td ([class "text-end"]) ,(if latest-target (round 2 latest-target) "—"))
(td ([class "text-end"]) ,(if delta-percentage (round 1 delta-percentage) "—")))))
(a ([class "btn btn-primary mb-3"] [href "/measurement/new"]) "Ajouter un relevé")
(table ([class "table table-striped"])
(tr (th "Date")
(th ([class "text-end"]) "N")
(th ([class "text-end"]) "P")
(th ([class "text-end"]) "K"))
,@(for/list ([m measurements])
(define measured-on (nutrient-measurement-date m))
(define-values (n p k)
(apply values
(for/list ([nutrient '("Nitrate Nitrogen" "Phosphorus" "Potassium")])
(define n (get-nutrient #:name nutrient))
(define mnv (get-nutrient-measurement-value m n))
(if (real? mnv)
(round 2 mnv)
"—"))))
`(tr (td ,measured-on)
(td ([class "text-end font-monospace"]) ,n)
(td ([class "text-end font-monospace"]) ,p)
(td ([class "text-end font-monospace"]) ,k)))))))
(define (new-measurement-page)
(page-template
"Nouveau relevé"
`((h1 ([class "display-1 mb-3"]) "Nouveau relevé")
(div ([class "mb-3"] [style "max-width: 30em"])
(form
([action "/measurement/create"]
[method "POST"])
,@(formlet-display (measurements-formlet)))))))
(define (new-target-page)
(page-template
"Nouvelle cible"
`((h1 ([class "display-1 mb-3"]) "Nouvelle cible")
(div ([class "mb-3"] [style "max-width: 30em"])
(form
([action "/target/create"]
[method "POST"])
,@(formlet-display (targets-formlet)))))))
(define (fallback-page request-code)
(page-template
(format "Réponse: ~a" request-code)
`((h1 ([class "display-1 text-danger"]) ,(number->string request-code))
(p ,(fallback-message request-code))
(a ([href "/"]) "Revenir à la page d'accueil"))))
(define (fallback-message request-code)
(string-join
`("Bonjour, je suis votre serveur."
,(format "J'ai répondu '~a'" request-code)
"et"
,(case (string-ref (number->string request-code) 0)
[(#\4) "c'est de votre faute, malheureusement."]
[(#\5) "c'est de ma faute, pardonnez-moi."]
[else "je ne sais pas qui est en tort."])
,(case request-code
;; Client errors
[(400) "Votre requête ne fait pas sens."]
[(401) "Vous n'avez pas vérifié votre identité."]
[(403) "Vous n'avez pas le droit de consulter cette page."]
[(404) "Vous avez demandé de consulter une page qui n'existe pas."]
;; Server errors
[(500) "Je suis dans une situation que je ne sais pas gérer, et ne peux vous en dire davantage."]
[(502) "Un tiers ne m'a pas transmis les informations nécessaires pour répondre à votre requête."]
[(503) "Je ne peux pas vous aider, il se peut que je sois momentanément surchargé. Revenez plus tard."]
;; Fallback message
[else (format "Je ne sais pas encore interpréter le code ~a." request-code)]))))
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