package provide punk::config [namespace eval punk::config {
	variable version
	set version 0.1
	
}]

namespace eval punk::config {
    variable loaded
    variable startup ;#include env overrides 
    variable running
    variable known_punk_env_vars

    #todo - XDG_DATA_HOME etc
    #https://specifications.freedesktop.org/basedir-spec/latest/
    # see also: http://hiphish.github.io/blog/2020/08/30/dotfiles-were-a-mistake/

    variable vars
    set vars [list \
        apps \
        config \
        configset \
        scriptlib \
        color_stdout \
        color_stderr \
        logfile_stdout \
        logfile_stderr \
        syslog_stdout \
        syslog_stderr \
        syslog_active \
        exec_unknown \
    ]
    #todo pkg punk::config

    #defaults

    dict set startup configset .punkshell
    dict set startup exec_unknown true ;#whether to use exec instead of experimental shellfilter::run
    #dict set startup color_stdout [list cyan bold] ;#not a good idea to default
    dict set startup color_stdout [list]
    dict set startup color_stderr [list red bold]
    dict set startup syslog_stdout "127.0.0.1:514"
    dict set startup syslog_stderr "127.0.0.1:514"
    dict set startup syslog_active 0
    #default file logs to logs folder at same location as exe if writable, or empty string
    dict set startup logfile_stdout ""
    dict set startup logfile_stderr ""
    set exefolder [file dirname [info nameofexecutable]]
    set log_folder $exefolder/logs
    dict set startup scriptlib $exefolder/scriptlib
    dict set startup apps $exefolder/../../punkapps
    if {[file exists $log_folder]} {
        if {[file isdirectory $log_folder] && [file writable $log_folder]} {
            dict set startup logfile_stdout $log_folder/repl-exec-stdout.txt
            dict set startup logfile_stderr $log_folder/repl-exec-stderr.txt
        }
    }


    #todo - load/write config file

    #env vars override the configuration

    #todo - define which configvars are settable in env
    set known_punk_env_vars [list \
        PUNK_APPS \
        PUNK_CONFIG \
        PUNK_CONFIGSET \
        PUNK_SCRIPTLIB \
        PUNK_EXECUNKNOWN \
        PUNK_COLOR_STDERR \
        PUNK_COLOR_STDOUT \
        PUNK_LOGFILE_STDOUT \
        PUNK_LOGFILE_STDERR \
        PUNK_SYSLOG_STDOUT \
        PUNK_SYSLOG_STDERR \
        PUNK_SYSLOG_ACTIVE \
        ]

    #override with env vars if set
    variable evar
    foreach evar $known_punk_env_vars {
        if {[info exists ::env($evar)]} {
            set f [set ::env($evar)]
            if {$f ne "default"} {
                #e.g PUNK_SCRIPTLIB -> scriptlib
                set varname [string tolower [string range $evar 5 end]]
                dict set startup $varname $f 
            }
        }
    }
    unset -nocomplain evar
    unset -nocomplain vars

    set running [dict create]
    set running [dict merge $running $startup]

    
}