#COMPILE EXE
#DIM ALL

FUNCTION PBMAIN() AS LONG
    LOCAL file_count AS LONG
    LOCAL i AS LONG
    LOCAL j AS LONG
    LOCAL file_size(50) AS LONG
    LOCAL file_hash(50) AS LONG
    LOCAL tracked(50) AS LONG
    LOCAL dup_found AS LONG
    LOCAL dedup_count AS LONG
    LOCAL saved_bytes AS LONG
    LOCAL temp_str AS STRING
    LOCAL temp_val AS LONG

    PRINT "File Deduplication (Simulated)"
    PRINT "============================="
    PRINT ""

    file_count = 10

    file_size(0) = 1024
    file_hash(0) = 12345
    file_size(1) = 1024
    file_hash(1) = 12345
    file_size(2) = 2048
    file_hash(2) = 67890
    file_size(3) = 2048
    file_hash(3) = 67890
    file_size(4) = 512
    file_hash(4) = 11111
    file_size(5) = 50176
    file_hash(5) = 22222
    file_size(6) = 50176
    file_hash(6) = 22222
    file_size(7) = 256
    file_hash(7) = 33333
    file_size(8) = 10240
    file_hash(8) = 44444
    file_size(9) = 10240
    file_hash(9) = 44444

    i = 0
    WHILE i < file_count
        tracked(i) = 0
        i = i + 1
    WEND

    PRINT "File list:"
    i = 0
    WHILE i < file_count
        temp_str = STR$(i)
        PRINT "  " + temp_str + ". "
        IF i = 0 THEN PRINT "report_a.txt"
        IF i = 1 THEN PRINT "report_b.txt"
        IF i = 2 THEN PRINT "data.csv"
        IF i = 3 THEN PRINT "data_copy.csv"
        IF i = 4 THEN PRINT "notes.txt"
        IF i = 5 THEN PRINT "photo.jpg"
        IF i = 6 THEN PRINT "photo_backup.jpg"
        IF i = 7 THEN PRINT "config.ini"
        IF i = 8 THEN PRINT "document.docx"
        IF i = 9 THEN PRINT "document_copy.docx"
        temp_str = STR$(file_size(i))
        PRINT " (" + temp_str + " bytes, hash=" + STR$(file_hash(i)) + ")"
        i = i + 1
    WEND

    ' Phase 1: Find duplicates by size
    PRINT ""
    PRINT "Phase 1: Size-based dedup"
    PRINT "--------------------------"
    i = 0
    WHILE i < file_count
        IF tracked(i) = 0 THEN
            j = i + 1
            WHILE j < file_count
                IF tracked(j) = 0 AND file_size(j) = file_size(i) THEN
                    tracked(i) = 1
                    tracked(j) = 1
                    dup_found = 1
                    temp_str = STR$(file_size(i))
                    PRINT "  Size match"
                    PRINT "  "
                    IF i = 0 THEN PRINT "report_a.txt"
                    IF i = 1 THEN PRINT "report_b.txt"
                    IF i = 2 THEN PRINT "data.csv"
                    IF i = 3 THEN PRINT "data_copy.csv"
                    IF i = 4 THEN PRINT "notes.txt"
                    IF i = 5 THEN PRINT "photo.jpg"
                    IF i = 6 THEN PRINT "photo_backup.jpg"
                    IF i = 7 THEN PRINT "config.ini"
                    IF i = 8 THEN PRINT "document.docx"
                    IF i = 9 THEN PRINT "document_copy.docx"
                    PRINT " = "
                    IF j = 0 THEN PRINT "report_a.txt"
                    IF j = 1 THEN PRINT "report_b.txt"
                    IF j = 2 THEN PRINT "data.csv"
                    IF j = 3 THEN PRINT "data_copy.csv"
                    IF j = 4 THEN PRINT "notes.txt"
                    IF j = 5 THEN PRINT "photo.jpg"
                    IF j = 6 THEN PRINT "photo_backup.jpg"
                    IF j = 7 THEN PRINT "config.ini"
                    IF j = 8 THEN PRINT "document.docx"
                    IF j = 9 THEN PRINT "document_copy.docx"
                    PRINT " (" + temp_str + " bytes)"
                END IF
                j = j + 1
            WEND
        END IF
        i = i + 1
    WEND

    IF dup_found = 0 THEN
        PRINT "  No size-based duplicates found"
    END IF

    ' Phase 2: Content comparison (hash-based)
    PRINT ""
    PRINT "Phase 2: Hash-based dedup"
    PRINT "--------------------------"
    i = 0
    dup_found = 0
    WHILE i < file_count
        IF tracked(i) = 0 THEN
            j = i + 1
            WHILE j < file_count
                IF tracked(j) = 0 AND file_hash(j) = file_hash(i) AND file_size(j) = file_size(i) THEN
                    tracked(i) = 1
                    tracked(j) = 1
                    dedup_count = dedup_count + 1
                    saved_bytes = saved_bytes + file_size(j)
                    dup_found = 1
                    PRINT "  Duplicate"
                    PRINT "  "
                    IF j = 0 THEN PRINT "report_a.txt"
                    IF j = 1 THEN PRINT "report_b.txt"
                    IF j = 2 THEN PRINT "data.csv"
                    IF j = 3 THEN PRINT "data_copy.csv"
                    IF j = 4 THEN PRINT "notes.txt"
                    IF j = 5 THEN PRINT "photo.jpg"
                    IF j = 6 THEN PRINT "photo_backup.jpg"
                    IF j = 7 THEN PRINT "config.ini"
                    IF j = 8 THEN PRINT "document.docx"
                    IF j = 9 THEN PRINT "document_copy.docx"
                    PRINT " = "
                    IF i = 0 THEN PRINT "report_a.txt"
                    IF i = 1 THEN PRINT "report_b.txt"
                    IF i = 2 THEN PRINT "data.csv"
                    IF i = 3 THEN PRINT "data_copy.csv"
                    IF i = 4 THEN PRINT "notes.txt"
                    IF i = 5 THEN PRINT "photo.jpg"
                    IF i = 6 THEN PRINT "photo_backup.jpg"
                    IF i = 7 THEN PRINT "config.ini"
                    IF i = 8 THEN PRINT "document.docx"
                    IF i = 9 THEN PRINT "document_copy.docx"
                END IF
                j = j + 1
            WEND
        END IF
        i = i + 1
    WEND

    IF dup_found = 0 THEN
        PRINT "  No hash-based duplicates found"
    END IF

    PRINT ""
    temp_str = STR$(dedup_count)
    PRINT "Duplicates found: " + temp_str
    temp_str = STR$(saved_bytes)
    PRINT "Space savings: " + temp_str + " bytes"

    IF saved_bytes > 0 THEN
        temp_str = STR$(saved_bytes / 1024)
        PRINT "  = " + temp_str + " KB"
    END IF

    i = 0
    temp_val = 0
    WHILE i < file_count
        IF tracked(i) = 0 THEN
            temp_val = temp_val + 1
        END IF
        i = i + 1
    WEND
    temp_str = STR$(temp_val)
    PRINT "Unique files after dedup: " + temp_str + " of " + STR$(file_count)

    PRINT ""
    PRINT "File deduplication complete."

    FUNCTION = 0
END FUNCTION
