import uno
import unohelper
from com.sun.star.task import XJobExecutor
import easymacro2 as app


ID_EXTENSION = 'net.elmau.zaz.latex2svg'
SERVICE = ('com.sun.star.task.Job',)


class ZAZLaTex2SVG(unohelper.Base, XJobExecutor):

    def __init__(self, ctx):
        self.ctx = ctx

    def trigger(self, args='pyUNO'):
        if args == 'app':
            self._app()
            return

        self._from_selection()
        return

    def _app(self):
        result = 'No encontrado'
        if app.paths.exists_app('pdflatex'):
            result = 'Encontrado'
        msg = f'pdflatex = {result}\n'

        result = 'No encontrado'
        if app.paths.exists_app('pdfcrop'):
            result = 'Encontrado'
        msg += f'pdfcrop = {result}\n'

        result = 'No encontrado'
        if app.paths.exists_app('pdf2svg'):
            result = 'Encontrado'
        msg += f'pdf2svg = {result}\n\n'

        msg += 'No continues hasta tener las tres aplicaciones detectadas'

        app.msgbox(msg)
        return

    @app.catch_exception
    def _from_selection(self):
        template = """\documentclass{{article}}
        \\usepackage[a5paper, landscape]{{geometry}}
        \\usepackage{{xcolor}}
        \\usepackage{{amssymb}}
        \\usepackage{{amsmath}}
        \pagestyle{{empty}}
        \\begin{{document}}

        \[ {} \]

        \end{{document}}
        """
        doc = app.active
        sel = doc.selection
        if doc.type == 'writer':
            sel = sel[0]
        data = sel.value

        data = template.format(data)
        path_tmp = '/tmp'
        path_tex = '/tmp/test.tex'
        path_pdf = '/tmp/test.pdf'
        path_svg = '/tmp/test.svg'

        app.paths.save(path_tex, data)
        cmd = f'pdflatex --interaction=batchmode -output-directory={path_tmp} {path_tex}'
        app.run(cmd)
        cmd = f'pdfcrop {path_pdf} {path_pdf}'
        app.run(cmd)
        cmd = f'pdf2svg {path_pdf} {path_svg}'
        app.run(cmd)

        sel = sel.offset()
        args = {}
        if doc.type == 'writer':
            args = {'Width': 5000, 'Height': 2000}
        sel.insert_image(path_svg, args)

        return


g_ImplementationHelper = unohelper.ImplementationHelper()
g_ImplementationHelper.addImplementation(ZAZLaTex2SVG, ID_EXTENSION, SERVICE)