# =============================================
#  !tell script for Eggdrop
#  Usage:  !tell <nick> <message>
#  Admin:  /msg <bot> !cleartell        (bot owners only)
# =============================================

namespace eval tell {
    variable tellfile   "scripts/tell.db" ;# storage file (relative to the eggdrop dir)
    variable maxpending 10                 ;# max queued messages per nick (0 = unlimited)
    variable messages
    array set messages {}

    # Load queued messages from disk
    proc load {} {
        variable messages
        variable tellfile
        array unset messages
        array set messages {}
        if {![file exists $tellfile]} { return }
        if {[catch {open $tellfile r} fd]} {
            putlog "tell.tcl: cannot read $tellfile: $fd"
            return
        }
        fconfigure $fd -encoding utf-8
        while {[gets $fd line] >= 0} {
            if {[string trim $line] eq ""} { continue }
            # each line is a clean Tcl list: target sender time message
            if {[catch {lassign $line target sender time message}]} { continue }
            if {$target eq ""} { continue }
            lappend messages([string tolower $target]) [list $sender $time $message]
        }
        close $fd
    }

    # Persist queued messages to disk
    proc save {} {
        variable messages
        variable tellfile
        if {[catch {open $tellfile w} fd]} {
            putlog "tell.tcl: cannot write $tellfile: $fd"
            return
        }
        fconfigure $fd -encoding utf-8
        foreach target [array names messages] {
            foreach m $messages($target) {
                lassign $m sender time message
                puts $fd [list $target $sender $time $message]
            }
        }
        close $fd
    }

    # !tell <nick> <message> 
    proc do_tell {nick uhost hand chan text} {
        variable messages
        variable maxpending
        if {![regexp {^\s*(\S+)\s+(.+)$} $text -> target message]} {
            puthelp "PRIVMSG $chan :Usage: !tell <nick> <message>"
            return
        }
        set message [string trim $message]
        set ltarget [string tolower $target]
        if {$maxpending > 0 && [info exists messages($ltarget)] \
                && [llength $messages($ltarget)] >= $maxpending} {
            puthelp "PRIVMSG $chan :$nick: $target already has $maxpending messages waiting - try again later."
            return
        }
        set timestamp [clock format [clock seconds] -gmt 1 -format "%d/%m %H:%M GMT"]
        lappend messages($ltarget) [list $nick $timestamp $message]
        save
        puthelp "PRIVMSG $chan :$nick: noted. $target will be told the next time they're around."
    }

    # Deliver queued messages (on join or when the user speaks)
    proc deliver {nick uhost hand chan {text ""}} {
        variable messages
        set lnick [string tolower $nick]
        if {![info exists messages($lnick)] || [llength $messages($lnick)] == 0} {
            return
        }
        foreach m $messages($lnick) {
            lassign $m sender time message
            puthelp "PRIVMSG $chan :$nick: $sender left you a message on $time - $message"
        }
        unset messages($lnick)
        save
    }

    # !cleartell  (owner only via private message)
    proc clear_tells {nick uhost hand text} {
        variable messages
        set n 0
        foreach t [array names messages] { incr n [llength $messages($t)] }
        array unset messages
        array set messages {}
        save
        puthelp "PRIVMSG $nick :Cleared $n pending message(s)."
    }

    bind pub  - "!tell"      ::tell::do_tell
    bind join - *            ::tell::deliver
    bind pubm - *            ::tell::deliver     ;# deliver when the user next speaks
    bind msg  o "!cleartell" ::tell::clear_tells

    load
    putlog "tell.tcl loaded - !tell system active"
}