import logging
import os.path

from configclass import Config

from ee.fact import DataSetManager

logger = logging.getLogger(__name__)


class KicadDoitTasks(object):
    config = Config({
        "sch": None,
        "kicad_pcb": None,
        "gerber_dir": None,
        "gerber_zip": None,
        "data_set_dir": None,
    })

    def __init__(self, *args, **kwargs):
        self.config = self.config.make(kwargs)

        formatter = logging.Formatter("%(levelname)s: %(message)s")
        ch = logging.StreamHandler()
        ch.setFormatter(formatter)
        logger.addHandler(ch)

        logger.setLevel(logging.DEBUG)

    def tasks(self, *args, **kwargs):
        kicad_pcb = self.config["kicad_pcb"]
        sch = self.config["sch"]
        tasks = []

        dsm = DataSetManager(self.config["data_set_dir"])

        gerber_dir = self.config["gerber_dir"]
        gerber_zip = self.config["gerber_zip"]
        if kicad_pcb and gerber_dir:
            tasks.append(task_kicad_gerber(kicad_pcb, gerber_dir, gerber_zip))

        sch_ds = task_kicad_sch_to_data_set(dsm, sch) \
            if sch else None

        pcb_ds = task_kicad_pcb_to_data_set(dsm, kicad_pcb) \
            if kicad_pcb else None

        component_ds = task_kicad_create_component_data_set(dsm) \
            if sch_ds else None

        tasks = [component_ds, sch_ds, pcb_ds,]
        return tasks


def task_kicad_gerber(kicad_pcb: str, gerber_dir: str, gerber_zip: str, name="kicad-gerber"):
    import ee.kicad

    gerber_zip = gerber_zip or "{}.zip".format(gerber_dir)
    # logger.info("gerber_zip={}".format(gerber_zip))

    eg = next((p for p in (os.path.join(p, "export_gerber.py") for p in ee.kicad.__path__) if os.path.isfile(p)), None)
    if not eg:
        raise Exception("Could not find export_gerber.py")

    # TODO: replace with python
    mkdir = "mkdir -p {}".format(gerber_dir)
    export_gerber = " ".join([
        eg,
        "--pcb", kicad_pcb,
        "--output-directory", gerber_dir,
        "--protel-extensions",
    ])

    def make_zip():
        import zipfile
        from pathlib import Path
        with zipfile.ZipFile(gerber_zip, "w") as z:
            for p in Path(gerber_dir).iterdir():
                if not p.is_file():
                    continue
                z.write(p, arcname=p.relative_to(gerber_dir))

    return {
        "name": name,
        "targets": [gerber_zip],
        "actions": [mkdir, export_gerber, make_zip],
        "file_dep": [kicad_pcb],
    }


def task_kicad_sch_to_data_set(dsm: DataSetManager, sch, name="kicad-sch-to-data-set"):
    out_data_set = "kicad-sch"
    in_data_sets = []

    def action():
        import ee.kicad
        from ee.kicad.model import ComponentField

        with dsm.create_rw(out_data_set, inputs=in_data_sets) as ds:
            schematics = ee.kicad.read_schematics(sch)
            for c in [c for c in schematics.components]:
                o = ds.get_object("kicad-schematic-component", c.timestamp)
                o.set("ref", c.ref)
                o.set("ref-type", c.ref_type)
                if c.has_ref_num:
                    o.set("ref-num", str(c.ref_num))
                o.set("value", c.value)
                if c.footprint:
                    o.set("footprint", c.footprint)

                for f in c.fields:
                    if f.value and f.name not in ComponentField.names:
                        o.set(f.name, str(f.value))

    return {
        "name": name,
        "file_dep": [sch] + [dsm.metafile_for_ds(ds) for ds in in_data_sets],
        "actions": [action],
        "targets": [dsm.metafile_for_ds(out_data_set)],
    }


def task_kicad_pcb_to_data_set(dsm: DataSetManager, pcb_path, name="kicad-pcb-to-data-set"):
    out_data_set = "kicad-pcb"
    in_data_sets = []

    def action():
        import ee.kicad.pcb
        from ee.kicad.pcb import FpText

        logger.debug("Parsing PCB {}".format(pcb_path))

        with dsm.create_rw(out_data_set, inputs=in_data_sets) as ds:
            # [ds.delete(o) for o in ds.items(object_type="kicad-pcb-component")]

            pcb: ee.kicad.pcb.KicadPcb = ee.kicad.pcb.parse(pcb_path)
            for _m in pcb.modules:
                m: ee.kicad.pcb.Module = _m

                o = ds.get_object("kicad-pcb-component", m.tstamp)

                ref_text: FpText = next((t for t in m.fp_texts if t.kind == "reference"), None)
                o.set("reference", ref_text.value)

                x, y, rot = m.at
                o.set("at-x", x)
                o.set("at-y", y)
                o.set("at-rot", rot)
                o.set("layer", m.layer)

    return {
        "name": name,
        "file_dep": [pcb_path] + [dsm.metafile_for_ds(ds) for ds in in_data_sets],
        "actions": [action],
        "targets": [dsm.metafile_for_ds(out_data_set)],
    }


def task_kicad_create_component_data_set(dsm: DataSetManager, name="kicad-create-component-data-set"):
    out_data_set = "components"
    in_data_sets = ["kicad-sch", "kicad-pcb"]

    def action(targets, *args, **kwargs):
        logger.info("targets={}, args={}, kwargs={}".format(targets, args, kwargs))

        with dsm.create_rw(out_data_set, inputs=in_data_sets) as ds:
            items = ds.items()
            logger.info("Got {} objects".format(len(items)))
            for o in items:
                logger.info("processing {}".format(o.key))

    return {
        "name": name,
        "file_dep": [dsm.metafile_for_ds(ds) for ds in in_data_sets],
        "actions": [action],
        "targets": [dsm.metafile_for_ds(out_data_set)],
    }