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__doc__='''Database Connection

$Id: DABase.py,v 1.10 2003/01/20 14:39:34 fog Exp $'''
__version__='$Revision: 1.10 $'[11:-2]


import Shared.DC.ZRDB.Connection, sys
from App.Dialogs import MessageDialog
from Globals import HTMLFile, ImageFile
from ExtensionClass import Base
import Acquisition
from psycopg import NUMBER, ROWID, STRING, INTEGER, FLOAT
from psycopg import BOOLEAN, DATETIME, LONGINTEGER

class Connection(Shared.DC.ZRDB.Connection.Connection):
    _isAnSQLConnection = 1

    
    manage_options=Shared.DC.ZRDB.Connection.Connection.manage_options+(
        {'label': 'Browse', 'action':'manage_browse'},
        # {'label': 'Design', 'action':'manage_tables'}
        )

    manage_tables = HTMLFile('tables',globals())
    manage_browse = HTMLFile('browse',globals())

    info=None

    def tpValues(self):
        #if hasattr(self, '_v_tpValues'): return self._v_tpValues
        r=[]
        # self._v_tables=tables=TableBrowserCollection()
        #tables=tables.__dict__
        c = self._v_database_connection
        try:
            for d in c.tables(rdb=0):
                try:
                    name=d['TABLE_NAME']
                    b=TableBrowser()
                    b.__name__=name
                    b._d=d
                    b._c=c
                    # b._columns=c.columns(name)
                    try: b.icon=table_icons[d['TABLE_TYPE']]
                    except: pass
                    r.append(b)
                    # tables[name]=b
                except:
                    # print d['TABLE_NAME'], sys.exc_type, sys.exc_value
                    pass

        finally: pass #print sys.exc_type, sys.exc_value
        #self._v_tpValues=r
        return r

    def __getitem__(self, name):
        if name=='tableNamed':
            if not hasattr(self, '_v_tables'): self.tpValues()
            return self._v_tables.__of__(self)
        raise KeyError, name

    def manage_wizard(self, tables):
        " "

    def manage_join(self, tables, select_cols, join_cols, REQUEST=None):
        """Create an SQL join"""

    def manage_insert(self, table, cols, REQUEST=None):
        """Create an SQL insert"""

    def manage_update(self, table, keys, cols, REQUEST=None):
        """Create an SQL update"""

class TableBrowserCollection(Acquisition.Implicit):
    "Helper class for accessing tables via URLs"
    pass

class Browser(Base):
    def __getattr__(self, name):
        try: return self._d[name]
        except KeyError: raise AttributeError, name

class values:

    def len(self): return 1

    def __getitem__(self, i):
        try: return self._d[i]
        except AttributeError:
            pass
        self._d=self._f()
        return self._d[i]

class TableBrowser(Browser, Acquisition.Implicit):
    icon='what'
    Description=check=''
    info=HTMLFile('table_info',globals())
    menu=HTMLFile('table_menu',globals())

    def tpValues(self):
        v=values()
        v._f=self.tpValues_
        return v

    def tpValues_(self):
        r=[]
        tname=self.__name__
        for d in self._c.columns(tname):
            b=ColumnBrowser()
            b._d=d
            try: b.icon=field_icons[d['Type']]
            except: pass
            b.TABLE_NAME=tname
            r.append(b)
        return r
            
    def tpId(self): return self._d['TABLE_NAME']
    def tpURL(self): return "Table/%s" % self._d['TABLE_NAME']
    def Name(self): return self._d['TABLE_NAME']
    def Type(self): return self._d['TABLE_TYPE']

    manage_designInput=HTMLFile('designInput',globals())
    def manage_buildInput(self, id, source, default, REQUEST=None):
        "Create a database method for an input form"
        args=[]
        values=[]
        names=[]
        columns=self._columns
        for i in range(len(source)):
            s=source[i]
            if s=='Null': continue
            c=columns[i]
            d=default[i]
            t=c['Type']
            n=c['Name']
            names.append(n)
            if s=='Argument':
                values.append("<dtml-sqlvar %s type=%s>'" %
                              (n, vartype(t)))
                a='%s%s' % (n, boboType(t))
                if d: a="%s=%s" % (a,d)
                args.append(a)
            elif s=='Property':
                values.append("<dtml-sqlvar %s type=%s>'" %
                              (n, vartype(t)))
            else:
                if isStringType(t):
                    if find(d,"\'") >= 0: d=join(split(d,"\'"),"''")
                    values.append("'%s'" % d)
                elif d:
                    values.append(str(d))
                else:
                    raise ValueError, (
                        'no default was given for <em>%s</em>' % n)

class ColumnBrowser(Browser):
    icon='field'

    def check(self):
        return ('\t<input type=checkbox name="%s.%s">' %
                (self.TABLE_NAME, self._d['Name']))
    def tpId(self): return self._d['Name']
    def tpURL(self): return "Column/%s" % self._d['Name']
    def Description(self):
        d=self._d
        if d['Scale']:
            return " %(Type)s(%(Precision)s,%(Scale)s) %(Nullable)s" % d
        else:
            return " %(Type)s(%(Precision)s) %(Nullable)s" % d

table_icons={
    'TABLE': 'table',
    'VIEW':'view',
    'SYSTEM_TABLE': 'stable',
    }

field_icons={
    NUMBER.name: 'int',
    STRING.name: 'text',
    DATETIME.name: 'date',
    INTEGER.name: 'int',
    FLOAT.name: 'float',
    BOOLEAN.name: 'bin',
    ROWID.name: 'int'
    }
