Is there a way to move the “year” to the back of a footnote citation, placing the “page” right before it?

Question

The reason I want to do it is that the Bluebook style for American legal academica requires it. But I haven't been able to find out on how to do it. I have moved close to the desired Bluebook result departing from Will Hardy's Australian Guide to Legal Citation 2 or AGLC2.

According to the Bluebook, the citation of articles and books should finish with the year they were published between brackets. So, for instance:

Article:

Author, Title of the article. 4 Harv. L. Rev 93, 98[this is the page] (year)

Book [all in Small Caps]:

Author, Title of the Book [page] (year)

The files I use are the following:

• Will Hardy's ALC2 (aglc2.bbx and aglc2.cbx)
• A biblatex.cfg which looks like this (I think it is relevant for my question).

Biblatex.cfg:

\DeclareFieldFormat
[article,inbook,incollection,inproceedings,patent,thesis,unpublished]
{title}{\emph{#1\isdot}}
\DeclareFieldFormat
[book]
{title}{\sc{#1\isdot}}

\DeclareFieldFormat
[article,inbook,incollection,inproceedings,patent,thesis,unpublished]
{journaltitle}{\sc{#1}}

\renewbibmacro*{journal+issuetitle}{%
\printfield{volume}
\usebibmacro{journal}%
\setunit*{\addspace}%
\newunit}

\AtEveryCitekey{%
\clearfield{day}%
\clearfield{month}%
\clearfield{endday}%
\clearfield{endmonth}%
\clearfield{shorttitle}%
}

\endinput

Here's a MWE:

\documentclass[12pt,a4paper]{article}

\usepackage[utf8]{inputenc}

\usepackage[spanish]{babel}

\usepackage[backend=biber, sortlocale=auto, style=aglc2, citestyle=aglc2]{biblatex}

\usepackage{csquotes}

\addbibresource{america2.bib}

\begin{document}

This paper is an example of how footnotes should work in \emph{Bluebook}, the 
style of citation used in American legal academia. We call authors such as Friedman, 
who we think is awesome.\footcite[578]{friedman1} And we think he is awesome  again.\footcite[578]{friedman1}

And we cite him again.\footcite[578]{friedman1} But then we move on and cite some 
other guy for ``a new jurisprudence of judicial restraint.''\footcite{balkin}

Some other guy gets cited \footcite{kurland} and then we cite Friedman again
but with another article.\footcite{friedman2} But then we cite a book.\footcite[22]{parker}

And we cite Kurland again\footcite{kurland}

\printbibliography

\end{document}

Sorry I didn't include, before, america2.bib:

@article{friedman1,
    title = {Dialogue and Judicial Review},
    volume = {91},
    issn = {00262234},
    url = {},
    doi = {10.2307/1289700},
    pages = {577},
    number = {4},
    journaltitle = {Michigan Law Review},
    author = {Friedman, Barry},
    urldate = {2014-06-03},
    date = {1993-02},
    file = {}
}

@book{parker,
    title = {Here, the People Rule: A Constitutional Populist Manifesto},
    volume = {},
    url = {},
    shorttitle = {Here, the People Rule},
    pages = {},
    journaltitle = {},
    shortjournal = {},
    author = {Parker, Richard D.},
    date = {1992},
    file = {}
}

@article{friedman2,
    title = {Importance of Being Positive: The Nature and Function of Judicial Review, The},
    volume = {72},
    url = {},
    shorttitle = {Importance of Being Positive},
    pages = {1257},
    journaltitle = {University of Cincinnati Law Review},
    shortjournal = {U. Cin. L. Rev.},
    author = {Friedman, Barry},
    date = {2003},
    file = {}
}

@article{kurland,
    title = {The Supreme Court, 1963 Term},
    volume = {78},
    issn = {{0017811X}},
    url = {},
    doi = {10.2307/1338853},
    pages = {143},
    number = {1},
    journaltitle = {Harvard Law Review},
    author = {Kurland, Philip B.},
    urldate = {2014-06-03},
    date = {1964-11},
    file = {}
}

@article{balkin,
    title = {Understanding the Constitutional Revolution},
    volume = {87},
    url = {},
    pages = {1045},
    journaltitle = {Virginia Law Review},
    shortjournal = {Va. L. Rev.},
    author = {Balkin, Jack M. and Levinson, Sanford},
    date = {2001},
    file = {}
}

Answer 1

Here is a way, using xpatch. I deleted the shorttitle fields, as you don't seem to use them, and they appeared inconsistently in the footnotes (duplicates ot the full title, just before the year).

Let me also mention this thread, which you may know, in relation with translating the Bluebook specifications in a bib(la)tex style file.

\documentclass[12pt,a4paper]{article}

\usepackage[utf8]{inputenc}

\usepackage[spanish]{babel}
\usepackage{MinionPro}
\usepackage[backend=biber, sortlocale=auto, style=aglc2, citestyle=aglc2]{biblatex}

\newbibmacro*{bracketsyear}{%
\iffieldundef{year}
{\setunit{\addcomma\space}\newblock}%
{\printfield[brackets]{year}%
\setunit*{\addspace}}}

\usepackage{xpatch}

\xpatchbibdriver{article}{%
\setunit{\space}\newblock
\printfield{pages}%
\setunit{\space}\newblock}
{%
\setunit{\addcomma\space}\newblock
\printfield{pages}%
\setunit{\space}\newblock
\usebibmacro{bracketsyear}%
}{}{}

\DeclareBibliographyDriver{book}{%
\scshape
\usebibmacro{bibindex}%
\usebibmacro{author/editor}%
\setunit{\space}\newblock%
\printfield{postnote}
\usebibmacro{maintitle+title}%
\setunit{\addcomma\addspace}\newblock%
\printfield{postnote}
%\iffieldundef{url}{\printfield{note}\newunit\newblock}{}%
\usebibmacro{edition+year}%
% \newunit\newblock%
% \usebibmacro{origtitle}%
% \setunit{}%
% \iffieldundef{postnote}{}{\nopunct}%
}

\xpatchbibmacro{journal+issuetitle}{%
 \usebibmacro{parensyear}%
    }
{}{}{}

\renewbibmacro*{edition+year}{%
\addspace[\setunit{}%
\ifnameundef{translator}{}{\printnames{translator} trans\addcomma\addspace}%
\iffieldundef{note}{}{first published \printfield{note}\addcomma\addspace}%
\iffieldundef{edition}
{\printfield{year}}%
{\printfield{edition}\setunit{\addcomma\addspace}\printfield{year}}%
]}

\DeclareCiteCommand{\footcite}[\mkbibfootnote]
 {\bibsentence
 \usebibmacro{prenote}}
 {\usebibmacro{citeindex}%
 \usebibmacro{cite}}
 {\multicitedelim}
 {}

\usepackage{csquotes}

\addbibresource{america2.bib}

\begin{document}

This paper is an example of how footnotes should work in \emph{Bluebook}, the
style of citation used in American legal academia. We call authors such as Friedman,
who we think is awesome.\footcite[578]{friedman1} And we think he is awesome again.\footcite[578]{friedman1}

And we cite him again.\footcite[578]{friedman1} But then we move on and cite some
other guy for ``a new jurisprudence of judicial restraint.''\footcite{balkin}

Some other guy gets cited \footcite{kurland} and then we cite Friedman again
but with another article.\footcite{friedman2} But then we cite a book.\footcite[22]{parker}

And we cite Kurland again\footcite{kurland}, and Parker again. \footcite[22]{parker}

\printbibliography

\end{document}