# encoding: UTF-8
# api: python
# type: handler
# category: io
# title: Plugin configuration
# description: Read meta data, pyz/package contents, module locating
# version: 0.6.5
# version: 0.6.6
# priority: core
# docs: http://fossil.include-once.org/streamtuner2/wiki/plugin+meta+data
# config: -
#
# Provides plugin lookup and meta data extraction utility functions.
# It's used to abstract module+option management in applications.
# For consolidating internal use and external/tool accessibility.

        for name in core:
            self.have[name] = plugin_meta(module=name, extra_base=["config"])
        # aliases
        for name, meta in self.have.items():
            if meta.get("alias"):
                for alias in re.split("\s*[,;]\s*", meta["alias"]):
                    self.have[alias] = self.have[name]
        #dbg
        #for name,meta in sorted(self.have.items()):
        #    print "HAVE ", name, " == ", meta.get("version")

    # depends:
    def depends(self, plugin):
        r = True
        if plugin.get("depends"):
            dep_cmp = self.deps(plugin["depends"])
            if not (True in [self.cmp(alt_cmp, self.have) for alt_cmp in dep_cmp]):
                return False
        return True
            for alt_cmp in dep_cmp:
                if not True in [self.cmp([d], self.have) for d in alt_cmp]:
                    r = False
        return r

    # basic list pre-filtering (skip __init__, filter by api:,
    # exclude installed & same-version plugins)
    def valid(self, newpl):
        id = newpl.get("$name", "__invalid")
        have_ver = self.have.get(id, {}).get("version", "0")
        if id.find("__") == 0: