using DelimitedFiles, Plots
include("../nucleons.jl")

# test data generated from Hartree.f
# format: x S(x) V(x) R(x) A(x)
test_data = readdlm("test/Pb208FldsFSUGarnet.csv") 
xs = test_data[:, 1]
Ss = test_data[:, 2]
Vs = test_data[:, 3]
Rs = test_data[:, 4]
As = test_data[:, 5]

κ = -1
p = false
r_max = maximum(xs)
divs = length(xs) - 1
s = system(r_max, divs)

s.Φ0 = Ss
s.W0 = Vs
s.B0 = Rs
s.A0 = As

E_min = 850.0
E_max = 938.0

boundEs = findEs(κ, p, s, E_min, E_max)

binding_Es = (p ? M_p : M_n) .- boundEs
println("binding energies = $binding_Es")

func = determinantFunc(κ, p, s)
Es = collect(E_min:0.1:E_max)
dets = [func(E)^2 for E in Es]

plot(Es, dets, yscale=:log10, label="determinant^2")
vline!(boundEs, label="bound E")
xlabel!("E (MeV)")