import sys
import os
import re
from glob import glob

from shutil import rmtree
from subprocess import run

from tools.pdocs import console, pdoc3serve, pdoc3, shipDocs

ORG = "annotation"
REPO = "text-fabric"
PKG = "tf"
PACKAGE = "text-fabric"
SCRIPT = "/Library/Frameworks/Python.framework/Versions/Current/bin/{PACKAGE}"

DIST = "dist"

TESTPYPI_URL = "https://test.pypi.org/simple/"

VERSION_CONFIG = dict(
    setup=dict(
        file="setup.cfg",
        re=re.compile(r"""version\s*=\s*(\S+)"""),
        mask="version = {}",
    ),
    parameters=dict(
        file="tf/parameters.py",
        re=re.compile(r"""\bVERSION\s*=\s*['"]([^'"]*)['"]"""),
        mask="VERSION = '{}'",
    ),
)

AN_BASE = os.path.expanduser(f"~/github/{ORG}")
TUT_BASE = f"{AN_BASE}/tutorials"
TF_BASE = f"{AN_BASE}/{REPO}"
TEST_BASE = f"{TF_BASE}/test"
APP_BASE = f"{TF_BASE}/apps"

currentVersion = None
newVersion = None

appPat = r"^.*/app-([^/]*)$"
appRe = re.compile(appPat)

apps = set()
for appDir in glob(f"{AN_BASE}/app-*"):
    match = appRe.fullmatch(appDir)
    if match:
        apps.add(match.group(1))
apps = sorted(apps)
appStr = ", ".join(apps)

HELP = f"""
python3 build.py command

command:

-h
--help


docs  : serve docs locally
pdocs : build docs
sdocs : ship docs
clean : clean local develop build
l     : local develop build
i     : local non-develop build
ti    : install from testpypi (uninstall first)
g     : push to github, code and docs
v     : show current version
r1    : version becomes r1+1.0.0
r2    : version becomes r1.r2+1.0
r3    : version becomes r1.r2.r3+1
ship  : build and ship as a release to pypi
shipt : build and ship as a release to test-pypi
shipo : ship to pypi, skip build and commit and tag (after having done a shipt)
apps  : commit and push all tf apps
tut   : commit and push the tutorials repo
a     : open {PACKAGE} browser on specific dataset
        ({appStr})
t     : run test suite (relations, qperf)
data  : build data files for github release

For g, ship, shipt you need to pass a commit message.
For data you need to pass an app argument:
  {appStr}
"""


def readArgs():
    args = sys.argv[1:]
    if not len(args) or args[0] in {"-h", "--help", "help"}:
        console(HELP)
        return (False, None, [])
    arg = args[0]
    if arg not in {
        "a",
        "t",
        "docs",
        "pdocs",
        "sdocs",
        "clean",
        "l",
        "i",
        "ti",
        "g",
        "ship",
        "shipt",
        "shipo",
        "data",
        "apps",
        "tut",
        "v",
        "r1",
        "r2",
        "r3",
    }:
        console(HELP)
        return (False, None, [])
    if arg in {"g", "apps", "tut", "ship", "shipt"}:
        if len(args) < 2:
            console("Provide a commit message")
            return (False, None, [])
        return (arg, args[1], args[2:])
    if arg in {"a", "t", "data"}:
        if len(args) < 2:
            if arg in {"a", "data"}:
                console(f"Provide a data source [{appStr}]")
            elif arg in {"t"}:
                console("Provide a test suite [relations, qperf]")
            return (False, None, [])
        return (arg, args[1], args[2:])
    return (arg, None, [])


def incVersion(version, task):
    comps = [int(c) for c in version.split(".")]
    (major, minor, update) = comps
    if task == "r1":
        major += 1
        minor = 0
        update = 0
    elif task == "r2":
        minor += 1
        update = 0
    elif task == "r3":
        update += 1
    return ".".join(str(c) for c in (major, minor, update))


def replaceVersion(task, mask):
    def subVersion(match):
        global currentVersion
        global newVersion
        currentVersion = match.group(1)
        newVersion = incVersion(currentVersion, task)
        return mask.format(newVersion)

    return subVersion


def showVersion():
    global currentVersion
    versions = set()
    for (key, c) in VERSION_CONFIG.items():
        with open(c["file"]) as fh:
            text = fh.read()
        match = c["re"].search(text)
        version = match.group(1)
        console(f'{version} (according to {c["file"]})')
        versions.add(version)
    currentVersion = None
    if len(versions) == 1:
        currentVersion = list(versions)[0]


def adjustVersion(task):
    for (key, c) in VERSION_CONFIG.items():
        console(f'Adjusting version in {c["file"]}')
        with open(c["file"]) as fh:
            text = fh.read()
        text = c["re"].sub(replaceVersion(task, c["mask"]), text)
        with open(c["file"], "w") as fh:
            fh.write(text)
    if currentVersion == newVersion:
        console(f"Rebuilding version {newVersion}")
    else:
        console(f"Replacing version {currentVersion} by {newVersion}")


def makeDist(pypi=True, test=False):
    distFile = "{}-{}".format(PACKAGE, currentVersion)
    distFileCompressed = f"{distFile}.tar.gz"
    distPath = f"{DIST}/{distFileCompressed}"
    distPath = f"{DIST}/*"
    if os.path.exists(DIST):
        rmtree(DIST)
    os.makedirs(DIST, exist_ok=True)
    # run(["python3", "setup.py", "sdist", "bdist_wheel"])
    # run(["python3", "setup.py", "bdist_wheel"])
    run(["python3", "-m", "build"])
    if pypi:
        if test:
            run(["twine", "upload", "-r", "testpypi", distPath])
        else:
            run(["twine", "upload", distPath])
        # run("./purge.sh", shell=True)


def commit(task, msg):
    run(["git", "add", "--all", "."])
    run(["git", "commit", "-m", msg])
    run(["git", "push", "origin", "master"])
    if task in {"ship", "shipt"}:
        tagVersion = f"v{currentVersion}"
        commitMessage = f"Release {currentVersion}: {msg}"
        run(["git", "tag", "-a", tagVersion, "-m", commitMessage])
        run(["git", "push", "origin", "--tags"])


def commitApps(msg):
    for app in apps:
        os.chdir(f"{AN_BASE}/app-{app}")
        console(f"In {os.getcwd()}")
        run(["git", "add", "--all", "."])
        run(["git", "commit", "-m", msg])
        run(["git", "push", "origin", "master"])
    os.chdir(f"{TF_BASE}")


def commitTut(msg):
    os.chdir(f"{TUT_BASE}")
    console(f"In {os.getcwd()}")
    run(["git", "add", "--all", "."])
    run(["git", "commit", "-m", msg])
    run(["git", "push", "origin", "master"])
    os.chdir(f"{TF_BASE}")


def tfbrowse(dataset, remaining):
    rargs = " ".join(remaining)
    cmdLine = f"{PACKAGE} {dataset} {rargs}"
    try:
        run(cmdLine, shell=True)
    except KeyboardInterrupt:
        pass


def tftest(suite, remaining):
    suiteDir = f"{TEST_BASE}/generic"
    suiteFile = f"{suite}.py"
    good = True
    try:
        os.chdir(suiteDir)
    except Exception:
        good = False
        console(f'Cannot find TF test directory "{suiteDir}"')
    if not good:
        return
    if not os.path.exists(suiteFile):
        console(f'Cannot find TF test suite "{suite}"')
        return
    rargs = " ".join(remaining)
    cmdLine = f"python3 {suiteFile} -v {rargs}"
    try:
        run(cmdLine, shell=True)
    except KeyboardInterrupt:
        pass


def clean():
    # run(["python3", "setup.py", "develop", "-u"])
    if os.path.exists(SCRIPT):
        os.unlink(SCRIPT)
    run(["pip3", "uninstall", "-y", PACKAGE])


def main():
    (task, msg, remaining) = readArgs()
    if not task:
        return
    elif task == "a":
        tfbrowse(msg, remaining)
    elif task == "t":
        tftest(msg, remaining)
    elif task == "docs":
        pdoc3serve(PKG)
    elif task == "pdocs":
        pdoc3(PKG)
    elif task == "sdocs":
        shipDocs(ORG, REPO, PKG)
    elif task == "clean":
        clean()
    elif task == "l":
        clean()
        # run(["python3", "setup.py", "develop"])
        run("pip3 install -e .", shell=True)
    # elif task == "lp":
    #     clean()
    #     run(["python3", "setup.py", "sdist"])
    #     distFiles = glob(f"dist/{PACKAGE}-*.tar.gz")
    #     run(["pip3", "install", distFiles[0]])
    elif task == "i":
        clean()
        makeDist(pypi=False)
        # run(
        #     [
        #         "pip3",
        #         "install",
        #         "--upgrade",
        #         "--no-index",
        #         "--find-links",
        #         f'file://{TF_BASE}/dist"',
        #         PACKAGE,
        #     ]
        #  )
    elif task == "ti":
        clean()
        run(
            f"pip3 install --index-url {TESTPYPI_URL} --no-deps text-fabric", shell=True
        )
    elif task == "g":
        shipDocs(ORG, REPO, PKG)
        commit(task, msg)
    elif task == "apps":
        commitApps(msg)
    elif task == "tut":
        commitTut(msg)
    elif task == "v":
        showVersion()
    elif task in {"r", "r1", "r2", "r3"}:
        adjustVersion(task)
    elif task in {"ship", "shipt", "shipo"}:
        showVersion()
        if not currentVersion:
            console("No current version")
            return

        answer = input("right version ? [yn]")
        if answer != "y":
            return
        if task != "shipo":
            shipDocs(ORG, REPO, PKG)

        makeDist(test=task == "shipt")

        if task != "shipo":
            commit(task, msg)


main()