package addressparsing_test

import (
    "fmt"
    "strings"
    "testing"

    "pkg.jfrech.com/brief/internal/addressparsing"
)

func HelperFixQuotesAndCommentsPretty(s string) string {
    buf := make([]byte, len(s))
    for j := range buf {
        switch s[j] {
        case '"':
            buf[j] = 'Q'
        case '(':
            buf[j] = 'L'
        case ')':
            buf[j] = 'R'
        case '\\':
            buf[j] = 'B'
        default:
            buf[j] = '.'
        }
    }
    return string(buf)
}

type CaseFixQuotesAndComments struct {
    S string

    Fix string
}

func CasesFixQuotesAndComments() []CaseFixQuotesAndComments {
    return []CaseFixQuotesAndComments{
        CaseFixQuotesAndComments{"", ""},
        CaseFixQuotesAndComments{"))()", ""},
        CaseFixQuotesAndComments{"))()(", ")"},
        CaseFixQuotesAndComments{"))()(<(", "))"},
        CaseFixQuotesAndComments{")))", ""},
        CaseFixQuotesAndComments{"<<{(", ")"},
        CaseFixQuotesAndComments{"Hallo, du da.", ""},
        CaseFixQuotesAndComments{"Hallo, du( da.", ")"},
        CaseFixQuotesAndComments{` " \" " `, ``,},
        CaseFixQuotesAndComments{` " \" `, `"`,},
        CaseFixQuotesAndComments{`" "`, ``,},
        CaseFixQuotesAndComments{`" \"`, `"`,},
        CaseFixQuotesAndComments{`"`, `"`,},
        CaseFixQuotesAndComments{`("("`, `)`,},
        CaseFixQuotesAndComments{`("(`, `")`,},
        CaseFixQuotesAndComments{`(((")"`, `)))`,},
        CaseFixQuotesAndComments{`(`, `)`,},
        CaseFixQuotesAndComments{`a "`, `"`},
        CaseFixQuotesAndComments{`a (""`, `)`},
        CaseFixQuotesAndComments{`a ("\`, `\")`},
        CaseFixQuotesAndComments{`a ("`, `")`},
        CaseFixQuotesAndComments{`wakka <"<"@!>`, ""},
        CaseFixQuotesAndComments{`wakka <"<"@!">`, "\""},

        CaseFixQuotesAndComments{"\"\\", "\\\""},
        CaseFixQuotesAndComments{"\"\\\\", "\""},
    }
}

func TestFixQuotesAndComments(t *testing.T) {
    for j, tc := range CasesFixQuotesAndComments() {
        s := addressparsing.FixQuotesAndComments(tc.S)

        if s != tc.S + tc.Fix {
            pretty := HelperFixQuotesAndCommentsPretty
            b := new(strings.Builder)
            fmt.Fprintf(b, "    tc.S ............................................=%q\n", tc.S)
            fmt.Fprintf(b, "    addressparsing.FixQuotesAndComments(tc.S) .......=%q\n", s)
            fmt.Fprintf(b, "    tc.S+tc.Fix .....................................=%q\n", tc.S+tc.Fix)
            fmt.Fprintf(b, "    \n")
            fmt.Fprintf(b, "    pretty(tc.S) ....................................=%q\n", pretty(tc.S))
            fmt.Fprintf(b, "    pretty(addressparsing.FixQuotesAndComments(tc.S))=%q\n", pretty(s))
            fmt.Fprintf(b, "    pretty(tc.S+tc.Fix) .............................=%q\n", pretty(tc.S+tc.Fix))
            t.Errorf("CaseFixQuotes()[%d]:\n%s", j, b.String())
        }
    }
}

func FuzzFixQuotesAndCommentsIdempotency(f *testing.F) {
    for _, tc := range CasesFixQuotesAndComments() {
        f.Add(tc.S)
        f.Add(tc.S + tc.Fix)
    }

    f.Fuzz(func(t *testing.T, s0 string) {
        s1 := addressparsing.FixQuotesAndComments(s0)
        s2 := addressparsing.FixQuotesAndComments(s1)

        if s1 != s2 {
            pretty := HelperFixQuotesAndCommentsPretty
            t.Errorf("idempotency contract violated:\n    s0=%q,\n    s1=%q,\n    s2=%q,\n    pretty(s0)=%q,\n    pretty(s1)=%q,\n    pretty(s2)=%q", s0, s1, s2, pretty(s0), pretty(s1), pretty(s2))
        }
    })
}

//

// BUG(jfrech): 2024-06-12: Insufficient test.
func TestContainsLiveAt(t *testing.T) {
    for s, is := range map[string]bool{
        "": false,
        "@valid": true,
        "valid@": true,
        "\"@\"": false,
        "@\"@\"": true,
        "@@": true,
    } {
        if addressparsing.ContainsLiveAt(s) != is {
            t.Errorf("addressparsing.ContainsLiveAt(%q) == %t != %t", s, !is, is)
        }
    }
}