package profile

import "core:fmt"
import "core:strings"
import "core:time"

Counters :: struct {
	frame_count: u64,
	app_frame_count: u64,
	app_wall_seconds: f64,

	frame_begin_ns:      i64,
	frame_end_ns:        i64,
	render_pass_begin_ns: i64,
	ir2d_lower_ns:       i64,
	ir3d_lower_ns:       i64,
	compute_lower_ns:    i64,

	ir2d_commands:       u64,
	ir3d_commands:       u64,
	compute_dispatches:  u64,
	batch_flushes:       u64,
	queue3d_flushes:     u64,

	draw_indexed_calls:  u64,
	dispatch_calls:      u64,
	pipeline_binds:      u64,
	descriptor_binds:    u64,
	descriptor_updates:  u64,
	push_constants:      u64,
	vertices_submitted:  u64,
	indices_submitted:   u64,
}

now :: proc() -> time.Time {
	return time.now()
}

elapsed_ns :: proc(start, stop: time.Time) -> i64 {
	return time.duration_nanoseconds(time.diff(start, stop))
}

to_json :: proc(c: Counters, allocator := context.allocator) -> string {
	buf := strings.builder_make(allocator)
	strings.write_string(&buf, "{")
	fmt.sbprintf(&buf, "\"frame_count\":%d", c.frame_count)
	fmt.sbprintf(&buf, ",\"app_frame_count\":%d", c.app_frame_count)
	fmt.sbprintf(&buf, ",\"app_wall_seconds\":%.9f", c.app_wall_seconds)
	fmt.sbprintf(&buf, ",\"frame_begin_ns\":%d", c.frame_begin_ns)
	fmt.sbprintf(&buf, ",\"frame_end_ns\":%d", c.frame_end_ns)
	fmt.sbprintf(&buf, ",\"render_pass_begin_ns\":%d", c.render_pass_begin_ns)
	fmt.sbprintf(&buf, ",\"ir2d_lower_ns\":%d", c.ir2d_lower_ns)
	fmt.sbprintf(&buf, ",\"ir3d_lower_ns\":%d", c.ir3d_lower_ns)
	fmt.sbprintf(&buf, ",\"compute_lower_ns\":%d", c.compute_lower_ns)
	fmt.sbprintf(&buf, ",\"ir2d_commands\":%d", c.ir2d_commands)
	fmt.sbprintf(&buf, ",\"ir3d_commands\":%d", c.ir3d_commands)
	fmt.sbprintf(&buf, ",\"compute_dispatches\":%d", c.compute_dispatches)
	fmt.sbprintf(&buf, ",\"batch_flushes\":%d", c.batch_flushes)
	fmt.sbprintf(&buf, ",\"queue3d_flushes\":%d", c.queue3d_flushes)
	fmt.sbprintf(&buf, ",\"draw_indexed_calls\":%d", c.draw_indexed_calls)
	fmt.sbprintf(&buf, ",\"dispatch_calls\":%d", c.dispatch_calls)
	fmt.sbprintf(&buf, ",\"pipeline_binds\":%d", c.pipeline_binds)
	fmt.sbprintf(&buf, ",\"descriptor_binds\":%d", c.descriptor_binds)
	fmt.sbprintf(&buf, ",\"descriptor_updates\":%d", c.descriptor_updates)
	fmt.sbprintf(&buf, ",\"push_constants\":%d", c.push_constants)
	fmt.sbprintf(&buf, ",\"vertices_submitted\":%d", c.vertices_submitted)
	fmt.sbprintf(&buf, ",\"indices_submitted\":%d", c.indices_submitted)
	strings.write_string(&buf, "}")
	return strings.to_string(buf)
}