# 
# Copyright (c) 2018 Microsoft Corporation
#

# 1. copy over dlls
# 2. copy over libz3.dll for the different architectures
# 3. copy over Microsoft.Z3.dll from suitable distribution
# 4. copy nuspec file from packages
# 5. call nuget pack
# 6. sign package

import json
import os
import zipfile
import sys
import os.path
import shutil
import subprocess

def mk_dir(d):
    if not os.path.exists(d):
        os.makedirs(d)

os_info = {  'ubuntu-latest' : ('so', 'linux-x64'),
             'ubuntu-18' : ('so', 'linux-x64'),
             'ubuntu-20' : ('so', 'linux-x64'),
             'x64-glibc-2.31' : ('so', 'linux-x64'),
             'x64-win' : ('dll', 'win-x64'),
             'x86-win' : ('dll', 'win-x86'),
             'x64-osx' : ('dylib', 'osx-x64'),
             'arm64-osx' : ('dylib', 'osx-arm64'),
             'debian' : ('so', 'linux-x64') }

        

def classify_package(f, arch):
    for os_name in os_info:
        if os_name in f:
            ext, dst = os_info[os_name]
            return os_name, f[:-4], ext, dst
    print("Could not classify", f)
    return None

def replace(src, dst):
    try:
        os.remove(dst)
    except:
        shutil.move(src, dst)
    
def unpack(packages, symbols, arch):
    # unzip files in packages
    # out
    # +- runtimes
    #    +- win-x64
    #    +- win-x86
    #    +- linux-x64
    #    +- osx-x64
    # +
    tmp = "tmp" if not symbols else "tmpsym"
    for f in os.listdir(packages):
        print(f)
        if f.endswith(".zip") and classify_package(f, arch):
            os_name, package_dir, ext, dst = classify_package(f, arch)
            path = os.path.abspath(os.path.join(packages, f))
            zip_ref = zipfile.ZipFile(path, 'r')
            zip_ref.extract(f"{package_dir}/bin/libz3.{ext}", f"{tmp}")
            mk_dir(f"out/runtimes/{dst}/native")
            replace(f"{tmp}/{package_dir}/bin/libz3.{ext}", f"out/runtimes/{dst}/native/libz3.{ext}")            
            if "x64-win" in f or "x86-win" in f:
                mk_dir("out/lib/netstandard2.0/")
                if symbols:
                    zip_ref.extract(f"{package_dir}/bin/libz3.pdb", f"{tmp}")
                    replace(f"{tmp}/{package_dir}/bin/libz3.pdb", f"out/runtimes/{dst}/native/libz3.pdb") 
                files = ["Microsoft.Z3.dll"]                
                if symbols:
                    files += ["Microsoft.Z3.pdb", "Microsoft.Z3.xml"]
                for b in files:
                    zip_ref.extract(f"{package_dir}/bin/{b}", f"{tmp}")
                    replace(f"{tmp}/{package_dir}/bin/{b}", f"out/lib/netstandard2.0/{b}")

def mk_targets(source_root):
    mk_dir("out/build")
    shutil.copy(f"{source_root}/src/api/dotnet/Microsoft.Z3.targets.in", "out/build/Microsoft.Z3.targets")

def mk_icon(source_root):
    mk_dir("out/content")
    shutil.copy(f"{source_root}/resources/icon.jpg", "out/content/icon.jpg")

    
def create_nuget_spec(version, repo, branch, commit, symbols, arch):
    arch = f".{arch}" if arch == "x86" else ""
    contents = """<?xml version="1.0" encoding="utf-8"?>
<package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
    <metadata>
        <id>Microsoft.Z3{4}</id>
        <version>{0}</version>
        <authors>Microsoft</authors>
        <description>
Z3 is a satisfiability modulo theories solver from Microsoft Research.

Linux Dependencies:
    libgomp.so.1 installed    
        </description>
        <copyright>&#169; Microsoft Corporation. All rights reserved.</copyright>
        <tags>smt constraint solver theorem prover</tags>
        <icon>content/icon.jpg</icon>
        <projectUrl>https://github.com/Z3Prover/z3</projectUrl>
        <license type="expression">MIT</license>
        <repository type="git" url="{1}" branch="{2}" commit="{3}" />
        <requireLicenseAcceptance>true</requireLicenseAcceptance>
        <language>en</language>
        <dependencies>
            <group targetFramework=".netstandard2.0" />
        </dependencies>
    </metadata>
</package>""".format(version, repo, branch, commit, arch)
    print(contents)
    sym = "sym." if symbols else ""
    file = f"out/Microsoft.Z3{arch}.{sym}nuspec"
    print(file)
    with open(file, 'w') as f:
        f.write(contents)

class Env:
    def __init__(self, argv):
        self.packages = argv[1]
        self.version = argv[2]
        self.repo = argv[3]
        self.branch = argv[4]
        self.commit = argv[5]
        self.source_root = argv[6]
        self.symbols = False
        self.arch = "x64"
        if len(argv) > 7 and "symbols" == argv[7]:
            self.symbols = True
        if len(argv) > 8:
            self.arch = argv[8]

    def create(self):
        mk_dir(self.packages)
        unpack(self.packages, self.symbols, self.arch)
        mk_targets(self.source_root)
        mk_icon(self.source_root)
        create_nuget_spec(self.version, self.repo, self.branch, self.commit, self.symbols, self.arch)
        
def main():
    env = Env(sys.argv)
    print(env.packages)
    env.create()

main()
