/*
 * Copyright (C) 2001  Sistina Software
 *
 * This LVM library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This LVM library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this LVM library; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA
 *
 */

#include <sys/types.h>
#include <string.h>
#include "metadata.h"
#include "dbg_malloc.h"
#include "log.h"
#include "display.h"
#include "activate.h"

#define SIZE_BUF 128

char *display_size(unsigned long long size, size_len_t sl)
{
	int s;
	ulong byte = 1024 * 1024 * 1024;
	char *size_buf = NULL;
	char *size_str[][2] = {
		{"Terabyte", "TB"},
		{"Gigabyte", "GB"},
		{"Megabyte", "MB"},
		{"Kilobyte", "KB"},
		{"", ""}
	};

	if (!(size_buf = dbg_malloc(SIZE_BUF))) {
		log_error("no memory for size display buffer");
		return NULL;
	}

	if (size == 0LL)
		sprintf(size_buf, "0");
	else {
		s = 0;
		while (size_str[s] && size < byte)
			s++, byte /= 1024;
		snprintf(size_buf, SIZE_BUF - 1,
			 "%.2f %s", (float) size / byte, size_str[s][sl]);
	}

	/* Caller to deallocate */
	return size_buf;
}

/*
 * FIXME: this function is badly named, it doesn't display the data it
 * creates a new uuid string with -'s in it.  It would be better if
 * the destination was passed in as well. EJT
 */
char *display_uuid(char *uuidstr)
{
	int i, j;
	char *uuid;

	if ((!uuidstr) || !(uuid = dbg_malloc(NAME_LEN))) {
		log_error("no memory for uuid display buffer");
		return NULL;
	}

	memset(uuid, 0, NAME_LEN);

	i = 6;
	memcpy(uuid, uuidstr, i);
	uuidstr += i;

	for (j = 0; j < 6; j++) {
		uuid[i++] = '-';
		memcpy(&uuid[i], uuidstr, 4);
		uuidstr += 4;
		i += 4;
	}

	memcpy(&uuid[i], uuidstr, 2);

	/* Caller must free */
	return uuid;
}

void pvdisplay_colons(struct physical_volume *pv)
{
	char *uuid;

	if (!pv)
		return;

	uuid = display_uuid(pv->id.uuid);

	log_print("%s:%s:%llu:-1:%u:%u:-1:%llu:%u:%u:%u:%s",
		  dev_name(pv->dev), pv->vg_name, pv->size,
		  /* FIXME pv->pv_number, Derive or remove? */
		  pv->status,	/* FIXME Support old or new format here? */
		  pv->status & ALLOCATED_PV,	/* FIXME Remove? */
		  /* FIXME pv->lv_cur, Remove? */
		  pv->pe_size / 2,
		  pv->pe_count,
		  pv->pe_count - pv->pe_allocated,
		  pv->pe_allocated, *uuid ? uuid : "none");

	dbg_free(uuid);

	return;
}

void pvdisplay_full(struct physical_volume *pv)
{
	char *uuid;
	char *size, *size1;	/*, *size2; */

	uint64_t pe_free;

	if (!pv)
		return;

	uuid = display_uuid(pv->id.uuid);

	log_print("--- %sPhysical volume ---", pv->pe_size ? "" : "NEW ");
	log_print("PV Name               %s", dev_name(pv->dev));
	log_print("VG Name               %s", pv->vg_name);

	size = display_size(pv->size / 2, SIZE_SHORT);
	if (pv->pe_size && pv->pe_count) {
		size1 = display_size((pv->size - pv->pe_count * pv->pe_size)
				     / 2, SIZE_SHORT);

/******** FIXME display LVM on-disk data size 
		size2 = display_size(pv->size / 2, SIZE_SHORT);
********/

		log_print("PV Size               %s" " / not usable %s",	/*  [LVM: %s]", */
			  size, size1);	/* , size2);    */

		dbg_free(size1);
		/* dbg_free(size2); */
	} else
		log_print("PV Size               %s", size);
	dbg_free(size);

/*********FIXME Anything use this?
	log_print("PV#                   %u", pv->pv_number);
**********/

	log_print("PV Status             %savailable",
		  (pv->status & ACTIVE) ? "" : "NOT ");

	pe_free = pv->pe_count - pv->pe_allocated;
	if (pv->pe_count && (pv->status & ALLOCATED_PV))
		log_print("Allocatable           yes %s",
			  (!pe_free && pv->pe_count) ? "(but full)" : "");
	else
		log_print("Allocatable           NO");

/*********FIXME
	log_print("Cur LV                %u", pv->lv_cur);
*********/
	log_print("PE Size (KByte)       %llu", pv->pe_size / 2);
	log_print("Total PE              %u", pv->pe_count);
	log_print("Free PE               %llu", pe_free);
	log_print("Allocated PE          %u", pv->pe_allocated);

#ifdef LVM_FUTURE
	printf("Stale PE              %u", pv->pe_stale);
#endif

	log_print("PV UUID               %s", *uuid ? uuid : "none");
	log_print(" ");

	dbg_free(uuid);

	return;
}

void pv_display_short(struct physical_volume *pv)
{
	if (!pv)
		return;

	log_print("PV Name               %s     ", dev_name(pv->dev));
	/* FIXME  pv->pv_number); */
	log_print("PV Status             %savailable / %sallocatable",
		  (pv->status & ACTIVE) ? "" : "NOT ",
		  (pv->status & ALLOCATED_PV) ? "" : "NOT ");
	log_print("Total PE / Free PE    %u / %u",
		  pv->pe_count, pv->pe_count - pv->pe_allocated);

	return;
}

void lvdisplay_colons(struct logical_volume *lv)
{
	log_print("%s/%s:%s:%d:%d:-1:%d:%llu:%d:-1:%d:%d:-1:-1",
		  /* FIXME Prefix - attach to struct volume_group? */
		  lv->vg->name,
		  lv->name,
		  lv->vg->name,
		  (lv->status & (LVM_READ | LVM_WRITE)) >> 8,
		  lv->status & ACTIVE,
		  /* FIXME lv->lv_number,  */
		  lvs_in_vg_opened(lv->vg), lv->size, lv->le_count,
		  /* FIXME Add num allocated to struct! lv->lv_allocated_le, */
		  ((lv->status & ALLOC_STRICT) +
		   (lv->status & ALLOC_CONTIGUOUS) * 2), lv->read_ahead
		  /* FIXME device num MAJOR(lv->lv_dev), MINOR(lv->lv_dev) */
	    );
	return;
}

void lvdisplay_full(struct logical_volume *lv)
{
	char *size;
	uint32_t alloc;

	log_print("--- Logical volume ---");

	/* FIXME prefix */
	log_print("LV Name                %s/%s", lv->vg->name, lv->name);
	log_print("VG Name                %s", lv->vg->name);

	log_print("LV Write Access        %s",
		  (lv->status & LVM_WRITE) ? "read/write" : "read only");

/******* FIXME Snapshot
    if (lv->status & (LVM_SNAPSHOT_ORG | LVM_SNAPSHOT)) {
	if (lvm_tab_vg_read_with_pv_and_lv(vg_name, &vg) < 0) {
	    ret = -LVM_ELV_SHOW_VG_READ_WITH_PV_AND_LV;
	    goto lv_show_end;
	}
	printf("LV snapshot status     ");
	if (vg_check_active(vg_name) == TRUE) {
	    vg_t *vg_core;
	    if ((ret = vg_status_with_pv_and_lv(vg_name, &vg_core)) == 0) {
		lv_t *lv_ptr =
		    vg_core->
		    lv[lv_get_index_by_name(vg_core, lv->lv_name)];
		if (lv_ptr->lv_access & LV_SNAPSHOT) {
		    if (lv_ptr->lv_status & LV_ACTIVE)
			printf("active ");
		    else
			printf("INACTIVE ");
		}
		if (lv_ptr->lv_access & LV_SNAPSHOT_ORG) {
		    printf("source of\n");
		    while (lv_ptr->lv_snapshot_next != NULL) {
			lv_ptr = lv_ptr->lv_snapshot_next;
			printf("                       %s [%s]\n",
			       lv_ptr->lv_name,
			       (lv_ptr->
				lv_status & LV_ACTIVE) ? "active" :
			       "INACTIVE");
		    }
		    vg_free(vg_core, TRUE);
		} else {
		    printf("destination for %s\n",
			   lv_ptr->lv_snapshot_org->lv_name);
		}
	    }
	} else {
	    printf("INACTIVE ");
	    if (lv->lv_access & LV_SNAPSHOT_ORG)
		printf("original\n");
	    else
		printf("snapshot\n");
	}
    }
***********/

	log_print("LV Status              %savailable",
		  (lv->status & ACTIVE) ? "" : "NOT ");

/********* FIXME lv_number
    log_print("LV #                   %u", lv->lv_number + 1);
************/

/********* FIXME lv_open
    log_print("# open                 %u\n", lv->lv_open);
**********/
/********
#ifdef LVM_FUTURE
    printf("Mirror copies          %u\n", lv->lv_mirror_copies);
    printf("Consistency recovery   ");
    if (lv->lv_recovery | LV_BADBLOCK_ON)
	printf("bad blocks\n");
    else
	printf("none\n");
    printf("Schedule               %u\n", lv->lv_schedule);
#endif
********/

	size = display_size(lv->size / 2, SIZE_SHORT);
	log_print("LV Size                %s", size);
	dbg_free(size);

	log_print("Current LE             %u", lv->le_count);

/********** FIXME allocation
    log_print("Allocated LE           %u", lv->allocated_le);
**********/

/********** FIXME Snapshot
    if (lv->lv_access & LV_SNAPSHOT) {
	printf("snapshot chunk size    %s\n",
	       (dummy = lvm_show_size(lv->lv_chunk_size / 2, SHORT)));
	dbg_free(dummy);
	dummy = NULL;
	if (lv->lv_remap_end > 0) {
	    lv_remap_ptr = lv->lv_remap_ptr;
	    if (lv_remap_ptr > lv->lv_remap_end)
		lv_remap_ptr = lv->lv_remap_end;
	    dummy = lvm_show_size(lv_remap_ptr *
				  lv->lv_chunk_size / 2, SHORT);
	    dummy1 = lvm_show_size(lv->lv_remap_end *
				   lv->lv_chunk_size / 2, SHORT);
	    printf("Allocated to snapshot  %.2f%% [%s/%s]\n",
		   (float) lv_remap_ptr * 100 / lv->lv_remap_end,
		   dummy, dummy1);
	    dbg_free(dummy);
	    dbg_free(dummy1);
	    dummy =
		lvm_show_size((vg->
			       lv[lv_get_index_by_number
				  (vg,
				   lv->lv_number)]->lv_size -
			       lv->lv_remap_end * lv->lv_chunk_size) / 2,
			      SHORT);
	    printf("Allocated to COW-table %s\n", dummy);
	    dbg_free(dummy);
	}
    }
******************/

	if (lv->stripes > 1) {
		log_print("Stripes                %u", lv->stripes);
/*********** FIXME stripesize 
	log_print("Stripe size (KByte)    %u", lv->stripesize / 2);
***********/
	}

/**************
#ifdef LVM_FUTURE
    printf("Bad block             ");
    if (lv->lv_badblock == LV_BADBLOCK_ON)
	printf("on\n");
    else
	printf("off\n");
#endif
***************/

	/* FIXME next free == ALLOC_SIMPLE */
	alloc = lv->status & (ALLOC_STRICT | ALLOC_CONTIGUOUS);
	log_print("Allocation             %s%s%s%s",
		  !(alloc & (ALLOC_STRICT | ALLOC_CONTIGUOUS)) ? "next free" :
		  "", (alloc == ALLOC_STRICT) ? "strict" : "",
		  (alloc == ALLOC_CONTIGUOUS) ? "contiguous" : "",
		  (alloc ==
		   (ALLOC_STRICT | ALLOC_CONTIGUOUS)) ? "strict/contiguous" :
		  "");

	log_print("Read ahead sectors     %u\n", lv->read_ahead);

/****************
#ifdef LVM_FUTURE
    printf("IO Timeout (seconds)   ");
    if (lv->lv_io_timeout == 0)
	printf("default\n\n");
    else
	printf("%lu\n\n", lv->lv_io_timeout);
#endif
*************/

/********* FIXME blockdev 
    printf("Block device           %d:%d\n",
	   MAJOR(lv->lv_dev), MINOR(lv->lv_dev));
*************/

	return;
}


void lvdisplay_extents(struct logical_volume *lv)
{
	int le;
	struct list *pvh;
	struct physical_volume *pv;

	log_verbose("--- Distribution of logical volume on physical "
		    "volumes  ---");
	log_verbose("PV Name                  PE on PV     ");

	list_iterate(pvh, &lv->vg->pvs) {
		int count = 0;
		pv = &list_item(pvh, struct pv_list)->pv;
		for (le = 0; le < lv->le_count; le++)
			if (lv->map[le].pv->dev == pv->dev)
				count++;
		if (count)
			log_verbose("%-25s %d", dev_name(pv->dev), count);
	}

/********* FIXME "reads      writes" 

	   
    printf("\n   --- logical volume i/o statistic ---\n"
	   "   %d reads  %d writes\n", sum_reads, sum_writes);

******* */

	log_verbose(" ");
	log_verbose("--- Logical extents ---");
	log_verbose("LE    PV                        PE");

	for (le = 0; le < lv->le_count; le++) {
		log_verbose("%05d %-25s %05u  ", le,
			    dev_name(lv->map[le].pv->dev), lv->map[le].pe);
	}

	return;
}