syntax = "proto3";

package exa.diff_action_pb;

import "exa/codeium_common_pb/codeium_common.proto";

option go_package = "github.com/Exafunction/Exafunction/exa/diff_action_pb";

message UnifiedDiff {
    repeated UnifiedDiffLine lines = 3;
    message UnifiedDiffLine {
        string text = 1;
        UnifiedDiffLineType type = 2;
    }
}

message DiffBlock {
    int32 start_line = 1;
    int32 end_line = 2;
    UnifiedDiff unified_diff = 3;
    codeium_common_pb.Language from_language = 4;
    codeium_common_pb.Language to_language = 5;
}

message CharacterDiffChange {
    string text = 1;
    DiffChangeType type = 2;
}

message CharacterDiff {
    repeated CharacterDiffChange changes = 1;
}

message ComboDiffLine {
    string text = 1;
    DiffChangeType type = 2;
    CharacterDiff character_diff = 3;
}

message ComboDiff {
    repeated ComboDiffLine lines = 1;
}

message DiffSet {
    UnifiedDiff unified_diff = 1;
    CharacterDiff character_diff = 2;
    ComboDiff combo_diff = 3;
}

message DiffList {
    repeated DiffBlock diffs = 2;
}

enum UnifiedDiffLineType {
    UNIFIED_DIFF_LINE_TYPE_UNSPECIFIED = 0;
    UNIFIED_DIFF_LINE_TYPE_INSERT = 1;
    UNIFIED_DIFF_LINE_TYPE_DELETE = 2;
    UNIFIED_DIFF_LINE_TYPE_UNCHANGED = 3;
}

enum DiffChangeType {
    DIFF_CHANGE_TYPE_UNSPECIFIED = 0;
    DIFF_CHANGE_TYPE_INSERT = 1;
    DIFF_CHANGE_TYPE_DELETE = 2;
    DIFF_CHANGE_TYPE_UNCHANGED = 3;
}

enum DiffType {
    DIFF_TYPE_UNSPECIFIED = 0;
    DIFF_TYPE_UNIFIED = 1;
    DIFF_TYPE_CHARACTER = 2;
    DIFF_TYPE_COMBO = 3;
}