extends ProgressionData
class_name StoryProgressionData

@export var planted_mutation_ids: Array[String] = []
@export var story_step_i := 0
@export var mutations_unlocked = 8

func get_story_step() -> StoryStep:
    return get_all_story_steps()[story_step_i]

func get_story_progression() -> float:
    return max(0,float(story_step_i)) / len(
        get_all_story_steps()
    )

func discover_mutation(pm : PlantMutation) -> void:
    planted_mutation_ids.append(pm.id)

func get_mutations_discovered() -> Array[String]:
    return planted_mutation_ids

func next_story_step() -> void:
    get_story_step()._on_finish()
    if story_step_i + 1 < len(get_all_story_steps()):
        story_step_i += 1

func get_available_mutations() -> Array[PlantMutation]:
    return get_all_mutations().slice(0, mutations_unlocked)

func are_all_mutations_unlocked() -> bool:
    return mutations_unlocked >= len(get_all_mutations())

func unlock_new_mutation() -> PlantMutation:
    var new_mutation = get_all_mutations()[mutations_unlocked]
    mutations_unlocked += 1
    return new_mutation