#include "core/profile.h"
#include "core/display.h"
#include "core/errorhelper.h"
#include "core/file.h"
#include "core/membuffer.h"
#include "core/subsurface-string.h"
#include "core/save-profiledata.h"
#include "core/version.h"
#include <errno.h>

static void put_int(struct membuffer *b, int val)
{
	put_format(b, "\"%d\", ", val);
}

static void put_int_with_nl(struct membuffer *b, int val)
{
	put_format(b, "\"%d\"\n", val);
}

static void put_csv_string(struct membuffer *b, const char *val)
{
	put_format(b, "\"%s\", ", val);
}

static void put_csv_string_with_nl(struct membuffer *b, const char *val)
{
	put_format(b, "\"%s\"\n", val);
}

static void put_double(struct membuffer *b, double val)
{
	put_format(b, "\"%f\", ", val);
}

static void put_video_time(struct membuffer *b, int secs)
{
	int hours = secs / 3600;
	secs -= hours * 3600;
	int mins = secs / 60;
	secs -= mins * 60;
	put_format(b, "%d:%02d:%02d.000,", hours, mins, secs);
}

static void put_pd(struct membuffer *b, const struct plot_info *pi, int idx)
{
	const struct plot_data *entry = pi->entry + idx;

	put_int(b, entry->in_deco);
	put_int(b,  entry->sec);
	for (int c = 0; c < pi->nr_cylinders; c++) {
		put_int(b, get_plot_sensor_pressure(pi, idx, c));
		put_int(b, get_plot_interpolated_pressure(pi, idx, c));
	}
	put_int(b, entry->temperature);
	put_int(b, entry->depth);
	put_int(b, entry->ceiling);
	for (int i = 0; i < 16; i++)
		put_int(b, entry->ceilings[i]);
	for (int i = 0; i < 16; i++)
		put_int(b, entry->percentages[i]);
	put_int(b, entry->ndl);
	put_int(b, entry->tts);
	put_int(b, entry->rbt);
	put_int(b, entry->stoptime);
	put_int(b, entry->stopdepth);
	put_int(b, entry->cns);
	put_int(b, entry->smoothed);
	put_int(b, entry->sac);
	put_int(b, entry->running_sum);
	put_double(b, entry->pressures.o2);
	put_double(b, entry->pressures.n2);
	put_double(b, entry->pressures.he);
	put_int(b, entry->o2pressure.mbar);
	put_int(b, entry->o2sensor[0].mbar);
	put_int(b, entry->o2sensor[1].mbar);
	put_int(b, entry->o2sensor[2].mbar);
	put_int(b, entry->o2setpoint.mbar);
	put_int(b, entry->scr_OC_pO2.mbar);
	put_int(b, entry->mod);
	put_int(b, entry->ead);
	put_int(b, entry->end);
	put_int(b, entry->eadd);
	switch (entry->velocity) {
	case STABLE:
		put_csv_string(b, "STABLE");
		break;
	case SLOW:
		put_csv_string(b, "SLOW");
		break;
	case MODERATE:
		put_csv_string(b, "MODERATE");
		break;
	case FAST:
		put_csv_string(b, "FAST");
		break;
	case CRAZY:
		put_csv_string(b, "CRAZY");
		break;
	}
	put_int(b, entry->speed);
	put_int(b, entry->in_deco_calc);
	put_int(b, entry->ndl_calc);
	put_int(b, entry->tts_calc);
	put_int(b, entry->stoptime_calc);
	put_int(b, entry->stopdepth_calc);
	put_int(b, entry->pressure_time);
	put_int(b, entry->heartbeat);
	put_int(b, entry->bearing);
	put_double(b, entry->ambpressure);
	put_double(b, entry->gfline);
	put_double(b, entry->surface_gf);
	put_double(b, entry->density);
	put_int_with_nl(b, entry->icd_warning ? 1 : 0);
}

static void put_headers(struct membuffer *b, int nr_cylinders)
{
	put_csv_string(b, "in_deco");
	put_csv_string(b, "sec");
	for (int c = 0; c < nr_cylinders; c++) {
		put_format(b, "\"pressure_%d_cylinder\", ", c);
		put_format(b, "\"pressure_%d_interpolated\", ", c);
	}
	put_csv_string(b, "temperature");
	put_csv_string(b, "depth");
	put_csv_string(b, "ceiling");
	for (int i = 0; i < 16; i++)
		put_format(b, "\"ceiling_%d\", ", i);
	for (int i = 0; i < 16; i++)
		put_format(b, "\"percentage_%d\", ", i);
	put_csv_string(b, "ndl");
	put_csv_string(b, "tts");
	put_csv_string(b, "rbt");
	put_csv_string(b, "stoptime");
	put_csv_string(b, "stopdepth");
	put_csv_string(b, "cns");
	put_csv_string(b, "smoothed");
	put_csv_string(b, "sac");
	put_csv_string(b, "running_sum");
	put_csv_string(b, "pressureo2");
	put_csv_string(b, "pressuren2");
	put_csv_string(b, "pressurehe");
	put_csv_string(b, "o2pressure");
	put_csv_string(b, "o2sensor0");
	put_csv_string(b, "o2sensor1");
	put_csv_string(b, "o2sensor2");
	put_csv_string(b, "o2setpoint");
	put_csv_string(b, "scr_oc_po2");
	put_csv_string(b, "mod");
	put_csv_string(b, "ead");
	put_csv_string(b, "end");
	put_csv_string(b, "eadd");
	put_csv_string(b, "velocity");
	put_csv_string(b, "speed");
	put_csv_string(b, "in_deco_calc");
	put_csv_string(b, "ndl_calc");
	put_csv_string(b, "tts_calc");
	put_csv_string(b, "stoptime_calc");
	put_csv_string(b, "stopdepth_calc");
	put_csv_string(b, "pressure_time");
	put_csv_string(b, "heartbeat");
	put_csv_string(b, "bearing");
	put_csv_string(b, "ambpressure");
	put_csv_string(b, "gfline");
	put_csv_string(b, "surface_gf");
	put_csv_string(b, "density");
	put_csv_string_with_nl(b, "icd_warning");
}

static void put_st_event(struct membuffer *b, struct plot_data *entry, int offset, int length)
{
	double value;
	int decimals;
	const char *unit;

	if (entry->sec < offset || entry->sec > offset + length)
		return;

	put_format(b, "Dialogue: 0,");
	put_video_time(b, entry->sec - offset);
	put_video_time(b, (entry+1)->sec - offset < length ? (entry+1)->sec - offset : length);
	put_format(b, "Default,,0,0,0,,");
	put_format(b, "%d:%02d ", FRACTION(entry->sec, 60));
	value = get_depth_units(entry->depth, &decimals, &unit);
	put_format(b, "D=%02.2f %s ", value, unit);
	if (entry->temperature) {
		value = get_temp_units(entry->temperature, &unit);
		put_format(b, "T=%.1f%s ", value, unit);
	}
	// Only show NDL if it is not essentially infinite, show TTS for mandatory stops.
	if (entry->ndl_calc < 3600) {
		if (entry->ndl_calc > 0)
			put_format(b, "NDL=%d:%02d ", FRACTION(entry->ndl_calc, 60));
		else
			if (entry->tts_calc > 0)
				put_format(b, "TTS=%d:%02d ", FRACTION(entry->tts_calc, 60));
	}
	if (entry->surface_gf > 0.0) {
		put_format(b, "sGF=%.1f%% ", entry->surface_gf);
	}
	put_format(b, "\n");
}

static void save_profiles_buffer(struct membuffer *b, bool select_only)
{
	int i;
	struct dive *dive;
	struct plot_info pi;
	struct deco_state *planner_deco_state = NULL;

	init_plot_info(&pi);
	for_each_dive(i, dive) {
		if (select_only && !dive->selected)
			continue;
		create_plot_info_new(dive, &dive->dc, &pi, false, planner_deco_state);
		put_headers(b, pi.nr_cylinders);

		for (int i = 0; i < pi.nr; i++)
			put_pd(b, &pi, i);
		put_format(b, "\n");
		free_plot_info_data(&pi);
	}
}

void save_subtitles_buffer(struct membuffer *b, struct dive *dive, int offset, int length)
{
	struct plot_info pi;
	struct deco_state *planner_deco_state = NULL;

	init_plot_info(&pi);
	create_plot_info_new(dive, &dive->dc, &pi, false, planner_deco_state);

	put_format(b, "[Script Info]\n");
	put_format(b, "; Script generated by Subsurface %s\n", subsurface_canonical_version());
	put_format(b, "ScriptType: v4.00+\nPlayResX: 384\nPlayResY: 288\n\n");
	put_format(b, "[V4+ Styles]\nFormat: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding\n");
	put_format(b, "Style: Default,Arial,12,&Hffffff,&Hffffff,&H0,&H0,0,0,0,0,100,100,0,0,1,1,0,7,10,10,10,0\n\n");
	put_format(b, "[Events]\nFormat: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text\n");

	for (int i = 0; i < pi.nr; i++) {
		put_st_event(b, &pi.entry[i], offset, length);
	}
	put_format(b, "\n");

	free_plot_info_data(&pi);
}

int save_profiledata(const char *filename, bool select_only)
{
	struct membuffer buf = { 0 };
	FILE *f;
	int error = 0;

	save_profiles_buffer(&buf, select_only);

	if (same_string(filename, "-")) {
		f = stdout;
	} else {
		error = -1;
		f = subsurface_fopen(filename, "w");
	}
	if (f) {
		flush_buffer(&buf, f);
		error = fclose(f);
	}
	if (error)
		report_error("Save failed (%s)", strerror(errno));

	free_buffer(&buf);
	return error;
}